diff --git a/.vscode/settings.json b/.vscode/settings.json
index 87c1b66..728be30 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -9,9 +9,11 @@
         "dotenv",
         "dotenvy",
         "graphiql",
+        "mainmatter",
         "minijinja",
         "nocapture",
         "oneshot",
+        "opentelemetry",
         "pemfile",
         "prost",
         "protobuf",
diff --git a/Cargo.lock b/Cargo.lock
index a06a9c9..83cd069 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -162,7 +162,7 @@ dependencies = [
  "actix-service",
  "actix-tls",
  "actix-utils",
- "ahash 0.8.7",
+ "ahash 0.8.11",
  "base64 0.22.1",
  "bitflags 2.4.1",
  "brotli",
@@ -436,7 +436,7 @@ dependencies = [
  "actix-tls",
  "actix-utils",
  "actix-web-codegen",
- "ahash 0.8.7",
+ "ahash 0.8.11",
  "bytes 1.6.0",
  "bytestring",
  "cfg-if 1.0.0",
@@ -504,7 +504,7 @@ dependencies = [
  "actix-utils",
  "actix-web",
  "actix-web-lab-derive",
- "ahash 0.8.7",
+ "ahash 0.8.11",
  "arc-swap",
  "async-trait",
  "bytes 1.6.0",
@@ -643,9 +643,9 @@ dependencies = [
 
 [[package]]
 name = "ahash"
-version = "0.8.7"
+version = "0.8.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "77c3a9648d43b9cd48db467b3f87fdd6e146bcc88ab0180006cef2179fe11d01"
+checksum = "e89da841a80418a9b391ebaea17f5c112ffaaa96f621d2c285b5174da76b9011"
 dependencies = [
  "cfg-if 1.0.0",
  "const-random",
@@ -1110,6 +1110,12 @@ dependencies = [
  "num-traits",
 ]
 
+[[package]]
+name = "atomic"
+version = "0.5.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c59bdb34bc650a32731b31bd8f0829cc15d24a708ee31559e0bb34f2bc320cba"
+
 [[package]]
 name = "autocfg"
 version = "1.1.0"
@@ -1571,6 +1577,51 @@ dependencies = [
  "tracing",
 ]
 
+[[package]]
+name = "axum"
+version = "0.6.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3b829e4e32b91e643de6eafe82b1d90675f5874230191a4ffbc1b336dec4d6bf"
+dependencies = [
+ "async-trait",
+ "axum-core",
+ "bitflags 1.3.2",
+ "bytes 1.6.0",
+ "futures-util",
+ "http 0.2.9",
+ "http-body 0.4.5",
+ "hyper 0.14.27",
+ "itoa 1.0.9",
+ "matchit",
+ "memchr",
+ "mime",
+ "percent-encoding",
+ "pin-project-lite 0.2.13",
+ "rustversion",
+ "serde",
+ "sync_wrapper",
+ "tower",
+ "tower-layer",
+ "tower-service",
+]
+
+[[package]]
+name = "axum-core"
+version = "0.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "759fa577a247914fd3f7f76d62972792636412fbfd634cd452f6a385a74d2d2c"
+dependencies = [
+ "async-trait",
+ "bytes 1.6.0",
+ "futures-util",
+ "http 0.2.9",
+ "http-body 0.4.5",
+ "mime",
+ "rustversion",
+ "tower-layer",
+ "tower-service",
+]
+
 [[package]]
 name = "background-jobs"
 version = "1.0.0"
@@ -1846,7 +1897,7 @@ version = "2.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ce21468c1c9c154a85696bb25c20582511438edb6ad67f846ba1378ffdd80222"
 dependencies = [
- "ahash 0.8.7",
+ "ahash 0.8.11",
  "base64 0.13.1",
  "bitvec",
  "hex",
@@ -3508,6 +3559,16 @@ dependencies = [
  "zeroize",
 ]
 
+[[package]]
+name = "gethostname"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c1ebd34e35c46e00bb73e81363248d627782724609fe1b6396f553f68fe3862e"
+dependencies = [
+ "libc",
+ "winapi 0.3.9",
+]
+
 [[package]]
 name = "getrandom"
 version = "0.1.16"
@@ -3589,7 +3650,7 @@ dependencies = [
  "no-std-compat",
  "nonzero_ext",
  "parking_lot 0.12.3",
- "quanta",
+ "quanta 0.11.1",
  "rand 0.8.5",
  "smallvec",
 ]
@@ -3736,7 +3797,7 @@ version = "0.13.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "43a3c133739dddd0d2990f9a4bdf8eb4b21ef50e4851ca85ab661199821d510e"
 dependencies = [
- "ahash 0.8.7",
+ "ahash 0.8.11",
 ]
 
 [[package]]
@@ -3745,7 +3806,7 @@ version = "0.14.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f93e7192158dbcda357bdec5fb5788eebf8bbac027f3f33e719d29135ae84156"
 dependencies = [
- "ahash 0.8.7",
+ "ahash 0.8.11",
  "allocator-api2",
 ]
 
@@ -4031,7 +4092,7 @@ dependencies = [
  "hyper 0.14.27",
  "log",
  "rustls 0.21.12",
- "rustls-native-certs",
+ "rustls-native-certs 0.6.3",
  "tokio 1.37.0",
  "tokio-rustls 0.24.1",
 ]
@@ -4053,6 +4114,18 @@ dependencies = [
  "tower-service",
 ]
 
+[[package]]
+name = "hyper-timeout"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bbb958482e8c7be4bc3cf272a766a2b0bf1a6755e7a6ae777f017a31d11b13b1"
+dependencies = [
+ "hyper 0.14.27",
+ "pin-project-lite 0.2.13",
+ "tokio 1.37.0",
+ "tokio-io-timeout",
+]
+
 [[package]]
 name = "hyper-tls"
 version = "0.4.3"
@@ -4763,12 +4836,27 @@ version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ffbee8634e0d45d258acb448e7eaab3fce7a0a467395d4d9f228e3c1f01fb2e4"
 
+[[package]]
+name = "matchers"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8263075bb86c5a1b1427b5ae862e8889656f126e9f77c484496e8b47cf5c5558"
+dependencies = [
+ "regex-automata 0.1.10",
+]
+
 [[package]]
 name = "matches"
 version = "0.1.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2532096657941c2fea9c289d370a250971c689d4f143798ff67113ec042024a5"
 
+[[package]]
+name = "matchit"
+version = "0.7.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0e7465ac9959cc2b1404e8e2367b43684a6d13790fe23056cc8c6c5a6b7bcb94"
+
 [[package]]
 name = "md-5"
 version = "0.10.6"
@@ -4806,6 +4894,45 @@ dependencies = [
  "autocfg",
 ]
 
+[[package]]
+name = "metrics"
+version = "0.23.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "884adb57038347dfbaf2d5065887b6cf4312330dc8e94bc30a1a839bd79d3261"
+dependencies = [
+ "ahash 0.8.11",
+ "portable-atomic",
+]
+
+[[package]]
+name = "metrics-exporter-prometheus"
+version = "0.15.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "26eb45aff37b45cff885538e1dcbd6c2b462c04fe84ce0155ea469f325672c98"
+dependencies = [
+ "base64 0.22.1",
+ "indexmap 2.1.0",
+ "metrics",
+ "metrics-util",
+ "quanta 0.12.3",
+ "thiserror",
+]
+
+[[package]]
+name = "metrics-util"
+version = "0.17.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4259040465c955f9f2f1a4a8a16dc46726169bca0f88e8fb2dbeced487c3e828"
+dependencies = [
+ "crossbeam-epoch",
+ "crossbeam-utils",
+ "hashbrown 0.14.2",
+ "metrics",
+ "num_cpus",
+ "quanta 0.12.3",
+ "sketches-ddsketch",
+]
+
 [[package]]
 name = "middleware-encrypted-payloads"
 version = "1.0.0"
@@ -5074,6 +5201,12 @@ dependencies = [
  "tokio-util 0.7.11",
 ]
 
+[[package]]
+name = "mutually_exclusive_features"
+version = "0.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6d02c0b00610773bb7fc61d85e13d86c7858cbdf00e1a120bfc41bc055dbaa0e"
+
 [[package]]
 name = "mysql"
 version = "1.0.0"
@@ -5281,6 +5414,16 @@ dependencies = [
  "windows-sys 0.48.0",
 ]
 
+[[package]]
+name = "nu-ansi-term"
+version = "0.46.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "77a8165726e8236064dbb45459242600304b42a5ea24ee2948e18e023bf7ba84"
+dependencies = [
+ "overload",
+ "winapi 0.3.9",
+]
+
 [[package]]
 name = "num-bigint"
 version = "0.4.4"
@@ -5421,6 +5564,89 @@ dependencies = [
  "vcpkg",
 ]
 
+[[package]]
+name = "opentelemetry"
+version = "0.22.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "900d57987be3f2aeb70d385fff9b27fb74c5723cc9a52d904d4f9c807a0667bf"
+dependencies = [
+ "futures-core",
+ "futures-sink",
+ "js-sys",
+ "once_cell",
+ "pin-project-lite 0.2.13",
+ "thiserror",
+ "urlencoding",
+]
+
+[[package]]
+name = "opentelemetry-otlp"
+version = "0.15.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1a016b8d9495c639af2145ac22387dcb88e44118e45320d9238fbf4e7889abcb"
+dependencies = [
+ "async-trait",
+ "futures-core",
+ "http 0.2.9",
+ "opentelemetry",
+ "opentelemetry-proto",
+ "opentelemetry-semantic-conventions",
+ "opentelemetry_sdk",
+ "prost",
+ "thiserror",
+ "tokio 1.37.0",
+ "tonic",
+]
+
+[[package]]
+name = "opentelemetry-proto"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3a8fddc9b68f5b80dae9d6f510b88e02396f006ad48cac349411fbecc80caae4"
+dependencies = [
+ "opentelemetry",
+ "opentelemetry_sdk",
+ "prost",
+ "tonic",
+]
+
+[[package]]
+name = "opentelemetry-semantic-conventions"
+version = "0.14.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f9ab5bd6c42fb9349dcf28af2ba9a0667f697f9bdcca045d39f2cec5543e2910"
+
+[[package]]
+name = "opentelemetry_sdk"
+version = "0.22.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9e90c7113be649e31e9a0f8b5ee24ed7a16923b322c3c5ab6367469c049d6b7e"
+dependencies = [
+ "async-trait",
+ "crossbeam-channel",
+ "futures-channel",
+ "futures-executor",
+ "futures-util",
+ "glob",
+ "once_cell",
+ "opentelemetry",
+ "ordered-float",
+ "percent-encoding",
+ "rand 0.8.5",
+ "thiserror",
+ "tokio 1.37.0",
+ "tokio-stream",
+]
+
+[[package]]
+name = "ordered-float"
+version = "4.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a76df7075c7d4d01fdcb46c912dd17fba5b60c78ea480b475f2b6ab6f666584e"
+dependencies = [
+ "num-traits",
+]
+
 [[package]]
 name = "ordered-multimap"
 version = "0.4.3"
@@ -5437,6 +5663,12 @@ version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4030760ffd992bef45b0ae3f10ce1aba99e33464c90d14dd7c039884963ddc7a"
 
+[[package]]
+name = "overload"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b15813163c1d831bf4a13c3610c05c0d03b39feb07f7e09fa234dac9b15aaf39"
+
 [[package]]
 name = "owo-colors"
 version = "3.5.0"
@@ -5789,6 +6021,12 @@ dependencies = [
  "universal-hash",
 ]
 
+[[package]]
+name = "portable-atomic"
+version = "1.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7170ef9988bc169ba16dd36a7fa041e5c4cbeb6a35b76d4c03daded371eae7c0"
+
 [[package]]
 name = "postgres-protocol"
 version = "0.6.6"
@@ -5996,7 +6234,22 @@ dependencies = [
  "libc",
  "mach2",
  "once_cell",
- "raw-cpuid",
+ "raw-cpuid 10.7.0",
+ "wasi 0.11.0+wasi-snapshot-preview1",
+ "web-sys",
+ "winapi 0.3.9",
+]
+
+[[package]]
+name = "quanta"
+version = "0.12.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8e5167a477619228a0b284fac2674e3c388cba90631d7b7de620e6f1fcd08da5"
+dependencies = [
+ "crossbeam-utils",
+ "libc",
+ "once_cell",
+ "raw-cpuid 11.0.2",
  "wasi 0.11.0+wasi-snapshot-preview1",
  "web-sys",
  "winapi 0.3.9",
@@ -6124,6 +6377,15 @@ dependencies = [
  "bitflags 1.3.2",
 ]
 
+[[package]]
+name = "raw-cpuid"
+version = "11.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e29830cbb1290e404f24c73af91c5d8d631ce7e128691e9477556b540cd01ecd"
+dependencies = [
+ "bitflags 2.4.1",
+]
+
 [[package]]
 name = "redis"
 version = "0.24.0"
@@ -6196,8 +6458,17 @@ checksum = "380b951a9c5e80ddfd6136919eef32310721aa4aacd4889a8d39124b026ab343"
 dependencies = [
  "aho-corasick",
  "memchr",
- "regex-automata",
- "regex-syntax",
+ "regex-automata 0.4.3",
+ "regex-syntax 0.8.2",
+]
+
+[[package]]
+name = "regex-automata"
+version = "0.1.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6c230d73fb8d8c1b9c0b3135c5142a8acee3a0558fb8db5cf1cb65f8d7862132"
+dependencies = [
+ "regex-syntax 0.6.29",
 ]
 
 [[package]]
@@ -6208,7 +6479,7 @@ checksum = "5f804c7828047e88b2d32e2d7fe5a105da8ee3264f01902f796c8e067dc2483f"
 dependencies = [
  "aho-corasick",
  "memchr",
- "regex-syntax",
+ "regex-syntax 0.8.2",
 ]
 
 [[package]]
@@ -6217,6 +6488,12 @@ version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "30b661b2f27137bdbc16f00eda72866a92bb28af1753ffbd56744fb6e2e9cd8e"
 
+[[package]]
+name = "regex-syntax"
+version = "0.6.29"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f162c6dd7b008981e4d40210aca20b4bd0f9b60ca9271061b07f78537722f2e1"
+
 [[package]]
 name = "regex-syntax"
 version = "0.8.2"
@@ -6388,7 +6665,7 @@ version = "1.16.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e3625f343d89990133d013e39c46e350915178cf94f1bec9f49b0cbef98a3e3c"
 dependencies = [
- "ahash 0.8.7",
+ "ahash 0.8.11",
  "bitflags 2.4.1",
  "instant",
  "num-traits",
@@ -6669,6 +6946,19 @@ dependencies = [
  "security-framework",
 ]
 
+[[package]]
+name = "rustls-native-certs"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8f1fb85efa936c42c6d5fc28d2629bb51e4b2f4b8a5211e297d599cc5a093792"
+dependencies = [
+ "openssl-probe",
+ "rustls-pemfile 2.1.2",
+ "rustls-pki-types",
+ "schannel",
+ "security-framework",
+]
+
 [[package]]
 name = "rustls-pemfile"
 version = "1.0.4"
@@ -7167,6 +7457,12 @@ version = "0.3.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "38b58827f4464d87d377d175e90bf58eb00fd8716ff0a62f80356b5e61555d0d"
 
+[[package]]
+name = "sketches-ddsketch"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "85636c14b73d81f541e525f585c0a2109e6744e1565b5c1668e31c70c10ed65c"
+
 [[package]]
 name = "slab"
 version = "0.4.9"
@@ -7338,7 +7634,7 @@ version = "0.7.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "24ba59a9342a3d9bab6c56c118be528b27c9b60e490080e9711a04dccac83ef6"
 dependencies = [
- "ahash 0.8.7",
+ "ahash 0.8.11",
  "atoi",
  "byteorder",
  "bytes 1.6.0",
@@ -8044,6 +8340,16 @@ dependencies = [
  "windows-sys 0.48.0",
 ]
 
+[[package]]
+name = "tokio-io-timeout"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "30b74022ada614a1b4834de765f9bb43877f910cc8ce4be40e89042c9223a8bf"
+dependencies = [
+ "pin-project-lite 0.2.13",
+ "tokio 1.37.0",
+]
+
 [[package]]
 name = "tokio-macros"
 version = "2.2.0"
@@ -8270,6 +8576,37 @@ dependencies = [
  "winnow",
 ]
 
+[[package]]
+name = "tonic"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "76c4eb7a4e9ef9d4763600161f12f5070b92a578e1b634db88a6887844c91a13"
+dependencies = [
+ "async-stream",
+ "async-trait",
+ "axum",
+ "base64 0.21.7",
+ "bytes 1.6.0",
+ "h2 0.3.26",
+ "http 0.2.9",
+ "http-body 0.4.5",
+ "hyper 0.14.27",
+ "hyper-timeout",
+ "percent-encoding",
+ "pin-project",
+ "prost",
+ "rustls-native-certs 0.7.0",
+ "rustls-pemfile 2.1.2",
+ "rustls-pki-types",
+ "tokio 1.37.0",
+ "tokio-rustls 0.25.0",
+ "tokio-stream",
+ "tower",
+ "tower-layer",
+ "tower-service",
+ "tracing",
+]
+
 [[package]]
 name = "tower"
 version = "0.4.13"
@@ -8278,9 +8615,13 @@ checksum = "b8fa9be0de6cf49e536ce1851f987bd21a43b771b09473c3549a6c853db37c1c"
 dependencies = [
  "futures-core",
  "futures-util",
+ "indexmap 1.9.3",
  "pin-project",
  "pin-project-lite 0.2.13",
+ "rand 0.8.5",
+ "slab",
  "tokio 1.37.0",
+ "tokio-util 0.7.11",
  "tower-layer",
  "tower-service",
  "tracing",
@@ -8310,6 +8651,21 @@ dependencies = [
  "tracing-core",
 ]
 
+[[package]]
+name = "tracing-actix-web"
+version = "0.7.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fa069bd1503dd526ee793bb3fce408895136c95fc86d2edb2acf1c646d7f0684"
+dependencies = [
+ "actix-web",
+ "mutually_exclusive_features",
+ "opentelemetry",
+ "pin-project",
+ "tracing",
+ "tracing-opentelemetry",
+ "uuid 1.7.0",
+]
+
 [[package]]
 name = "tracing-attributes"
 version = "0.1.27"
@@ -8321,6 +8677,24 @@ dependencies = [
  "syn 2.0.48",
 ]
 
+[[package]]
+name = "tracing-bunyan-formatter"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b5c266b9ac83dedf0e0385ad78514949e6d89491269e7065bee51d2bb8ec7373"
+dependencies = [
+ "ahash 0.8.11",
+ "gethostname",
+ "log",
+ "serde",
+ "serde_json",
+ "time",
+ "tracing",
+ "tracing-core",
+ "tracing-log 0.1.4",
+ "tracing-subscriber",
+]
+
 [[package]]
 name = "tracing-core"
 version = "0.1.32"
@@ -8351,15 +8725,95 @@ dependencies = [
  "tracing",
 ]
 
+[[package]]
+name = "tracing-log"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f751112709b4e791d8ce53e32c4ed2d353565a795ce84da2285393f41557bdf2"
+dependencies = [
+ "log",
+ "once_cell",
+ "tracing-core",
+]
+
+[[package]]
+name = "tracing-log"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ee855f1f400bd0e5c02d150ae5de3840039a3f54b025156404e34c23c03f47c3"
+dependencies = [
+ "log",
+ "once_cell",
+ "tracing-core",
+]
+
+[[package]]
+name = "tracing-mainmatter-workshop"
+version = "1.0.0"
+dependencies = [
+ "actix-web",
+ "actix-web-lab",
+ "dotenvy",
+ "metrics",
+ "metrics-exporter-prometheus",
+ "opentelemetry",
+ "opentelemetry-otlp",
+ "opentelemetry_sdk",
+ "tonic",
+ "tracing",
+ "tracing-actix-web",
+ "tracing-bunyan-formatter",
+ "tracing-opentelemetry",
+ "tracing-subscriber",
+]
+
+[[package]]
+name = "tracing-opentelemetry"
+version = "0.23.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a9be14ba1bbe4ab79e9229f7f89fab8d120b865859f10527f31c033e599d2284"
+dependencies = [
+ "js-sys",
+ "once_cell",
+ "opentelemetry",
+ "opentelemetry_sdk",
+ "smallvec",
+ "tracing",
+ "tracing-core",
+ "tracing-log 0.2.0",
+ "tracing-subscriber",
+ "web-time",
+]
+
+[[package]]
+name = "tracing-serde"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bc6b213177105856957181934e4920de57730fc69bf42c37ee5bb664d406d9e1"
+dependencies = [
+ "serde",
+ "tracing-core",
+]
+
 [[package]]
 name = "tracing-subscriber"
 version = "0.3.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "30a651bc37f915e81f087d86e62a18eec5f79550c7faff886f7090b4ea757c77"
 dependencies = [
+ "matchers",
+ "nu-ansi-term",
+ "once_cell",
+ "regex",
+ "serde",
+ "serde_json",
  "sharded-slab",
+ "smallvec",
  "thread_local",
+ "tracing",
  "tracing-core",
+ "tracing-log 0.1.4",
+ "tracing-serde",
 ]
 
 [[package]]
@@ -8687,6 +9141,7 @@ version = "1.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f00cc9702ca12d3c81455259621e676d0f7251cec66a21e98fe2e9a37db93b2a"
 dependencies = [
+ "atomic",
  "getrandom 0.2.12",
  "serde",
 ]
@@ -8910,6 +9365,16 @@ dependencies = [
  "wasm-bindgen",
 ]
 
+[[package]]
+name = "web-time"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5a6580f308b1fad9207618087a65c04e7a10bc77e02c8e84e9b00dd4b12fa0bb"
+dependencies = [
+ "js-sys",
+ "wasm-bindgen",
+]
+
 [[package]]
 name = "webpki-roots"
 version = "0.25.4"
diff --git a/Cargo.toml b/Cargo.toml
index b2b219a..cb975ba 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,72 +1,73 @@
 [workspace]
 resolver = "2"
 members = [
-   "auth/casbin",
-   "auth/cookie-auth",
-   "auth/cookie-session",
-   "auth/redis-session",
-   "auth/simple-auth-server",
-   "background-jobs",
-   "basics/basics",
-   "basics/error-handling",
-   "basics/hello-world",
-   "basics/nested-routing",
-   "basics/state",
-   "basics/static-files",
-   "basics/todo",
-   "cors/backend",
-   "data-factory",
-   "databases/diesel",
-   "databases/mongodb",
-   "databases/mysql",
-   "databases/postgres",
-   "databases/redis",
-   # "databases/sqlite",
-   "docker",
-   "forms/form",
-   "forms/multipart-s3",
-   "forms/multipart",
-   "graphql/async-graphql",
-   "graphql/juniper-advanced",
-   "graphql/juniper",
-   "guards",
-   "http-proxy",
-   "https-tls/acme-letsencrypt",
-   "https-tls/awc-https",
-   "https-tls/cert-watch",
-   "https-tls/openssl",
-   "https-tls/rustls-client-cert",
-   "https-tls/rustls",
-   "json/json-decode-error",
-   "json/json-error",
-   "json/json-validation",
-   "json/json",
-   "json/jsonrpc",
-   "middleware/encrypted-payloads",
-   "middleware/http-to-https",
-   "middleware/rate-limit",
-   "middleware/request-extensions",
-   "middleware/various",
-   "protobuf",
-   "run-in-thread",
-   "server-sent-events",
-   "shutdown-server",
-   "templating/askama",
-   "templating/fluent",
-   "templating/handlebars",
-   "templating/minijinja",
-   "templating/sailfish",
-   "templating/tera",
-   "templating/tinytemplate",
-   "templating/yarte",
-   "unix-socket",
-   "websockets/autobahn",
-   "websockets/chat-actorless",
-   "websockets/chat-broker",
-   "websockets/chat-tcp",
-   "websockets/chat",
-   "websockets/echo-actorless",
-   "websockets/echo",
+  "auth/casbin",
+  "auth/cookie-auth",
+  "auth/cookie-session",
+  "auth/redis-session",
+  "auth/simple-auth-server",
+  "background-jobs",
+  "basics/basics",
+  "basics/error-handling",
+  "basics/hello-world",
+  "basics/nested-routing",
+  "basics/state",
+  "basics/static-files",
+  "basics/todo",
+  "cors/backend",
+  "data-factory",
+  "databases/diesel",
+  "databases/mongodb",
+  "databases/mysql",
+  "databases/postgres",
+  "databases/redis",
+  # "databases/sqlite",
+  "docker",
+  "forms/form",
+  "forms/multipart-s3",
+  "forms/multipart",
+  "graphql/async-graphql",
+  "graphql/juniper-advanced",
+  "graphql/juniper",
+  "guards",
+  "http-proxy",
+  "https-tls/acme-letsencrypt",
+  "https-tls/awc-https",
+  "https-tls/cert-watch",
+  "https-tls/openssl",
+  "https-tls/rustls-client-cert",
+  "https-tls/rustls",
+  "json/json-decode-error",
+  "json/json-error",
+  "json/json-validation",
+  "json/json",
+  "json/jsonrpc",
+  "middleware/encrypted-payloads",
+  "middleware/http-to-https",
+  "middleware/rate-limit",
+  "middleware/request-extensions",
+  "middleware/various",
+  "protobuf",
+  "run-in-thread",
+  "server-sent-events",
+  "shutdown-server",
+  "templating/askama",
+  "templating/fluent",
+  "templating/handlebars",
+  "templating/minijinja",
+  "templating/sailfish",
+  "templating/tera",
+  "templating/tinytemplate",
+  "templating/yarte",
+  "tracing/mainmatter-workshop",
+  "unix-socket",
+  "websockets/autobahn",
+  "websockets/chat-actorless",
+  "websockets/chat-broker",
+  "websockets/chat-tcp",
+  "websockets/chat",
+  "websockets/echo-actorless",
+  "websockets/echo",
 ]
 
 [workspace.package]
@@ -99,9 +100,14 @@ chrono = { version = "0.4.30", features = ["serde"] }
 derive_more = "0.99.7"
 dotenvy = "0.15"
 env_logger = "0.11"
-eyre = { version = "0.6", default-features = false, features = ["auto-install", "track-caller"] }
+eyre = { version = "0.6", default-features = false, features = [
+  "auto-install",
+  "track-caller",
+] }
 color-eyre = "0.6"
-futures-util = { version = "0.3.17", default-features = false, features = ["std"] }
+futures-util = { version = "0.3.17", default-features = false, features = [
+  "std",
+] }
 log = "0.4"
 openssl = { version = "0.10.60", features = ["v110"] }
 rand = "0.8"
@@ -112,3 +118,5 @@ serde_json = "1"
 tokio = { version = "1.24.2", features = ["sync", "io-util"] }
 tokio-util = "0.7.4"
 tokio-stream = "0.1.1"
+tracing = "0.1.30"
+tracing-subscriber = { version = "0.3", features = ["env-filter", "json"] }
diff --git a/databases/redis/Cargo.toml b/databases/redis/Cargo.toml
index 11aae16..3bf96d4 100644
--- a/databases/redis/Cargo.toml
+++ b/databases/redis/Cargo.toml
@@ -8,5 +8,8 @@ actix-web.workspace = true
 
 env_logger.workspace = true
 log.workspace = true
-redis = { version = "0.24", default-features = false, features = ["tokio-comp", "connection-manager"] }
+redis = { version = "0.24", default-features = false, features = [
+  "tokio-comp",
+  "connection-manager",
+] }
 serde.workspace = true
diff --git a/templating/yarte/Cargo.toml b/templating/yarte/Cargo.toml
index fe1520e..b99ea6e 100644
--- a/templating/yarte/Cargo.toml
+++ b/templating/yarte/Cargo.toml
@@ -6,7 +6,7 @@ edition = "2021"
 
 [package.metadata.cargo-machete]
 ignored = [
-    "yarte_helpers", # only build dep
+  "yarte_helpers", # only build dep
 ]
 
 [dependencies]
diff --git a/tracing/mainmatter-workshop/.env.example b/tracing/mainmatter-workshop/.env.example
new file mode 100644
index 0000000..8525a59
--- /dev/null
+++ b/tracing/mainmatter-workshop/.env.example
@@ -0,0 +1,2 @@
+RUST_LOG="info,mainmatter_workshop=trace"
+HONEYCOMB_API_KEY="..."
diff --git a/tracing/mainmatter-workshop/.gitignore b/tracing/mainmatter-workshop/.gitignore
new file mode 100644
index 0000000..ea8c4bf
--- /dev/null
+++ b/tracing/mainmatter-workshop/.gitignore
@@ -0,0 +1 @@
+/target
diff --git a/tracing/mainmatter-workshop/Cargo.toml b/tracing/mainmatter-workshop/Cargo.toml
new file mode 100644
index 0000000..2cc9a2e
--- /dev/null
+++ b/tracing/mainmatter-workshop/Cargo.toml
@@ -0,0 +1,22 @@
+[package]
+name = "tracing-mainmatter-workshop"
+version = "1.0.0"
+publish.workspace = true
+edition.workspace = true
+rust-version.workspace = true
+
+[dependencies]
+actix-web.workspace = true
+actix-web-lab.workspace = true
+dotenvy.workspace = true
+metrics = "0.23"
+metrics-exporter-prometheus = { version = "0.15", default-features = false }
+opentelemetry = "0.22"
+opentelemetry_sdk = { version = "0.22", features = ["rt-tokio-current-thread"] }
+opentelemetry-otlp = { version = "0.15", features = ["tls-roots"] }
+tonic = "0.11"
+tracing-actix-web = { version = "0.7", features = ["opentelemetry_0_22", "uuid_v7"] }
+tracing-opentelemetry = "0.23"
+tracing-subscriber.workspace = true
+tracing-bunyan-formatter = "0.3"
+tracing.workspace = true
diff --git a/tracing/mainmatter-workshop/README.md b/tracing/mainmatter-workshop/README.md
new file mode 100644
index 0000000..aa4cadb
--- /dev/null
+++ b/tracing/mainmatter-workshop/README.md
@@ -0,0 +1,23 @@
+# Telemetry Workshop Solution
+
+## Overview
+
+A solution to the capstone project at the end of [Mainmatter's telemetry workshop](https://github.com/mainmatter/rust-telemetry-workshop).
+
+As stated in the exercise brief, this example will:
+
+- Configure a `tracing` subscriber that exports data to both Honeycomb and stdout, in JSON format;
+- Configure a suitable panic hook;
+- Configure a `metric` recorder that exposes metric data at `/metrics`~~, using a different port than your API endpoints~~ (this example shows how to use the existing HTTP server);
+- Add one or more middleware that:
+  - Create a top-level INFO span for each incoming request;
+  - Track the number of concurrent requests using a gauge;
+  - Track request duration using a histogram;
+  - Track the number of handled requests All metrics should include success/failure as a label.
+
+## Usage
+
+```console
+$ cd tracing/mainmatter-workshop
+$ cargo run
+```
diff --git a/tracing/mainmatter-workshop/src/logging.rs b/tracing/mainmatter-workshop/src/logging.rs
new file mode 100644
index 0000000..970279d
--- /dev/null
+++ b/tracing/mainmatter-workshop/src/logging.rs
@@ -0,0 +1,57 @@
+use std::{io, time::Duration};
+
+use opentelemetry::KeyValue;
+use opentelemetry_otlp::WithExportConfig as _;
+use opentelemetry_sdk::{runtime, trace::Tracer, Resource};
+use tonic::metadata::MetadataMap;
+use tracing::level_filters::LevelFilter;
+use tracing_bunyan_formatter::{BunyanFormattingLayer, JsonStorageLayer};
+use tracing_subscriber::{layer::SubscriberExt as _, util::SubscriberInitExt as _, EnvFilter};
+
+pub(crate) fn init() {
+    let app_name = "actix-web-mainmatter-telemetry-workshop-capstone";
+
+    let tracer = opentelemetry_tracer(app_name);
+    let telemetry = tracing_opentelemetry::layer().with_tracer(tracer);
+
+    // we prefer the bunyan formatting layer in this example because it captures
+    // span enters and exits by default, making a good way to observe request
+    // info like duration when
+    let stdout_log = BunyanFormattingLayer::new(app_name.to_owned(), io::stdout);
+
+    tracing_subscriber::registry()
+        .with(
+            EnvFilter::builder()
+                .with_default_directive(LevelFilter::INFO.into())
+                .from_env_lossy(),
+        )
+        .with(telemetry)
+        .with(JsonStorageLayer)
+        .with(stdout_log)
+        .init();
+}
+
+fn opentelemetry_tracer(app_name: &str) -> Tracer {
+    let honeycomb_key =
+        std::env::var("HONEYCOMB_API_KEY").expect("`HONEYCOMB_API_KEY` should be set in your .env");
+
+    let mut metadata = MetadataMap::with_capacity(1);
+    metadata.insert("x-honeycomb-team", honeycomb_key.try_into().unwrap());
+
+    let trace_config =
+        opentelemetry_sdk::trace::Config::default().with_resource(Resource::new(vec![
+            KeyValue::new("service.name", app_name.to_owned()),
+        ]));
+    let exporter = opentelemetry_otlp::new_exporter()
+        .tonic()
+        .with_endpoint("https://api.honeycomb.io/api/traces")
+        .with_timeout(Duration::from_secs(5))
+        .with_metadata(metadata);
+
+    opentelemetry_otlp::new_pipeline()
+        .tracing()
+        .with_trace_config(trace_config)
+        .with_exporter(exporter)
+        .install_batch(runtime::TokioCurrentThread)
+        .unwrap()
+}
diff --git a/tracing/mainmatter-workshop/src/main.rs b/tracing/mainmatter-workshop/src/main.rs
new file mode 100644
index 0000000..ce99109
--- /dev/null
+++ b/tracing/mainmatter-workshop/src/main.rs
@@ -0,0 +1,32 @@
+use std::io;
+
+use actix_web::{App, HttpServer};
+use actix_web_lab::{extract::ThinData, middleware::from_fn};
+use tracing_actix_web::TracingLogger;
+
+mod logging;
+mod metric_names;
+mod middleware;
+mod prometheus;
+mod routes;
+
+#[actix_web::main]
+async fn main() -> io::Result<()> {
+    dotenvy::dotenv().ok();
+    logging::init();
+    let handle = prometheus::init();
+
+    HttpServer::new(move || {
+        App::new()
+            .app_data(ThinData(handle.clone()))
+            .service(routes::hello)
+            .service(routes::sleep)
+            .service(routes::metrics)
+            .wrap(from_fn(middleware::request_telemetry))
+            .wrap(TracingLogger::default())
+    })
+    .workers(2)
+    .bind(("127.0.0.1", 8080))?
+    .run()
+    .await
+}
diff --git a/tracing/mainmatter-workshop/src/metric_names.rs b/tracing/mainmatter-workshop/src/metric_names.rs
new file mode 100644
index 0000000..3afc45a
--- /dev/null
+++ b/tracing/mainmatter-workshop/src/metric_names.rs
@@ -0,0 +1,2 @@
+pub(crate) const HISTOGRAM_HTTP_REQUEST_DURATION: &str = "http_request_duration";
+pub(crate) const GAUGE_HTTP_CONCURRENT_REQUESTS: &str = "http_concurrent_requests";
diff --git a/tracing/mainmatter-workshop/src/middleware.rs b/tracing/mainmatter-workshop/src/middleware.rs
new file mode 100644
index 0000000..bef2340
--- /dev/null
+++ b/tracing/mainmatter-workshop/src/middleware.rs
@@ -0,0 +1,40 @@
+use std::time::Instant;
+
+use actix_web::HttpMessage as _;
+use actix_web::{
+    body::MessageBody,
+    dev::{ServiceRequest, ServiceResponse},
+    http::header::{HeaderName, HeaderValue},
+};
+use actix_web_lab::middleware::Next;
+use tracing_actix_web::RequestId;
+
+use crate::metric_names::*;
+
+pub(crate) async fn request_telemetry(
+    req: ServiceRequest,
+    next: Next<impl MessageBody>,
+) -> actix_web::Result<ServiceResponse<impl MessageBody>> {
+    let now = Instant::now();
+
+    metrics::gauge!(GAUGE_HTTP_CONCURRENT_REQUESTS).increment(1);
+
+    let mut res = next.call(req).await?;
+
+    let req_id = res.request().extensions().get::<RequestId>().copied();
+
+    if let Some(req_id) = req_id {
+        res.headers_mut().insert(
+            HeaderName::from_static("request-id"),
+            // this unwrap never fails, since UUIDs are valid ASCII strings
+            HeaderValue::from_str(&req_id.to_string()).unwrap(),
+        );
+    };
+
+    let diff = now.elapsed();
+    metrics::histogram!(HISTOGRAM_HTTP_REQUEST_DURATION).record(diff);
+
+    metrics::gauge!(GAUGE_HTTP_CONCURRENT_REQUESTS).decrement(1);
+
+    Ok(res)
+}
diff --git a/tracing/mainmatter-workshop/src/prometheus.rs b/tracing/mainmatter-workshop/src/prometheus.rs
new file mode 100644
index 0000000..5b8e58e
--- /dev/null
+++ b/tracing/mainmatter-workshop/src/prometheus.rs
@@ -0,0 +1,28 @@
+use std::array;
+
+use metrics::Unit;
+use metrics_exporter_prometheus::{PrometheusBuilder, PrometheusHandle};
+
+use crate::metric_names::*;
+
+pub(crate) fn init() -> PrometheusHandle {
+    metrics::describe_histogram!(
+        HISTOGRAM_HTTP_REQUEST_DURATION,
+        Unit::Seconds,
+        "Duration (in seconds) a request took to be processed"
+    );
+
+    PrometheusBuilder::new()
+        .set_buckets_for_metric(
+            metrics_exporter_prometheus::Matcher::Full(HISTOGRAM_HTTP_REQUEST_DURATION.to_owned()),
+            &exp_buckets::<28>(0.001), // values from ~0.3ms -> ~33s
+        )
+        .unwrap()
+        .install_recorder()
+        .unwrap()
+}
+
+fn exp_buckets<const N: usize>(base: f64) -> [f64; N] {
+    const RATIO: f64 = 1.5;
+    array::from_fn(|i| base * RATIO.powi(i as i32 - 3)).map(|val| (val * 1_e7).round() / 1_e7)
+}
diff --git a/tracing/mainmatter-workshop/src/routes.rs b/tracing/mainmatter-workshop/src/routes.rs
new file mode 100644
index 0000000..12d3313
--- /dev/null
+++ b/tracing/mainmatter-workshop/src/routes.rs
@@ -0,0 +1,21 @@
+use std::time::Duration;
+
+use actix_web::{get, HttpResponse, Responder};
+use actix_web_lab::extract::ThinData;
+use metrics_exporter_prometheus::PrometheusHandle;
+
+#[get("/hello")]
+pub(crate) async fn hello() -> impl Responder {
+    "Hello, World!"
+}
+
+#[get("/sleep")]
+pub(crate) async fn sleep() -> impl Responder {
+    actix_web::rt::time::sleep(Duration::from_millis(500)).await;
+    HttpResponse::Ok()
+}
+
+#[get("/metrics")]
+pub(crate) async fn metrics(metrics_handle: ThinData<PrometheusHandle>) -> impl Responder {
+    metrics_handle.render()
+}
diff --git a/websockets/chat-tcp/src/client.rs b/websockets/chat-tcp/src/client.rs
index 16ef0a3..cc344aa 100644
--- a/websockets/chat-tcp/src/client.rs
+++ b/websockets/chat-tcp/src/client.rs
@@ -24,7 +24,7 @@ async fn main() {
             return;
         }
 
-        if cmd == "/exit" {
+        if cmd.trim() == "/exit" {
             println!("exiting input loop");
             return;
         }