diff --git a/Cargo.lock b/Cargo.lock
index 3813fb1..e7e7f90 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -17,6 +17,12 @@ version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f26201604c87b1e01bd3d98f8d5d9a8fcbb815e8cedb41ffccbeb4bf593a35fe"
 
+[[package]]
+name = "anyhow"
+version = "1.0.82"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f538837af36e6f6a9be0faa67f9a314f8119e4e4b5867c6ab40ed60360142519"
+
 [[package]]
 name = "ascii"
 version = "0.9.3"
@@ -55,6 +61,12 @@ dependencies = [
  "rustc-demangle",
 ]
 
+[[package]]
+name = "base64"
+version = "0.21.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9d297deb1925b89f2ccc13d7635fa0714f12c87adce1c75356b39ca9b7178567"
+
 [[package]]
 name = "base64"
 version = "0.22.1"
@@ -143,6 +155,21 @@ version = "0.8.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "06ea2b9bc92be3c2baa9334a323ebca2d6f074ff852cd1d7b11064035cd3868f"
 
+[[package]]
+name = "crossbeam-channel"
+version = "0.5.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ab3db02a9c5b5121e1e42fbdb1aeb65f5e02624cc58c43f2884c6ccac0b82f95"
+dependencies = [
+ "crossbeam-utils",
+]
+
+[[package]]
+name = "crossbeam-utils"
+version = "0.8.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "248e3bacc7dc6baa3b21e405ee045c3047101a49145e7e9eca583ab4c2ca5345"
+
 [[package]]
 name = "either"
 version = "1.11.0"
@@ -225,6 +252,17 @@ version = "0.3.30"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dfc6580bb841c5a68e9ef15c77ccc837b40a7504914d52e47b8b0e9bbda25a1d"
 
+[[package]]
+name = "futures-executor"
+version = "0.3.30"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a576fc72ae164fca6b9db127eaa9a9dda0d61316034f33a0a0d4eda41f02b01d"
+dependencies = [
+ "futures-core",
+ "futures-task",
+ "futures-util",
+]
+
 [[package]]
 name = "futures-io"
 version = "0.3.30"
@@ -271,12 +309,31 @@ dependencies = [
  "slab",
 ]
 
+[[package]]
+name = "getrandom"
+version = "0.2.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "94b22e06ecb0110981051723910cbf0b5f5e09a2062dd7663334ee79a9d1286c"
+dependencies = [
+ "cfg-if",
+ "js-sys",
+ "libc",
+ "wasi",
+ "wasm-bindgen",
+]
+
 [[package]]
 name = "gimli"
 version = "0.28.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4271d37baee1b8c7e4b708028c57d816cf9d2434acb33a549475f78c181f6253"
 
+[[package]]
+name = "glob"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d2fabcfbdc87f4758337ca535fb41a6d701b65693ce38287d856d1674551ec9b"
+
 [[package]]
 name = "graphql-introspection-query"
 version = "0.2.0"
@@ -346,7 +403,7 @@ dependencies = [
  "futures-core",
  "futures-sink",
  "futures-util",
- "http",
+ "http 1.1.0",
  "indexmap",
  "slab",
  "tokio",
@@ -366,6 +423,17 @@ version = "0.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "95505c38b4572b2d910cecb0281560f54b440a19336cbbcb27bf6ce6adc6f5a8"
 
+[[package]]
+name = "http"
+version = "0.2.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "601cbb57e577e2f5ef5be8e7b83f0f63994f25aa94d673e54a92d5c516d101f1"
+dependencies = [
+ "bytes",
+ "fnv",
+ "itoa",
+]
+
 [[package]]
 name = "http"
 version = "1.1.0"
@@ -377,6 +445,17 @@ dependencies = [
  "itoa",
 ]
 
+[[package]]
+name = "http-body"
+version = "0.4.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7ceab25649e9960c0311ea418d17bee82c0dcec1bd053b5f9a66e265a693bed2"
+dependencies = [
+ "bytes",
+ "http 0.2.12",
+ "pin-project-lite",
+]
+
 [[package]]
 name = "http-body"
 version = "1.0.0"
@@ -384,7 +463,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1cac85db508abc24a2e48553ba12a996e87244a0395ce011e62b37158745d643"
 dependencies = [
  "bytes",
- "http",
+ "http 1.1.0",
 ]
 
 [[package]]
@@ -395,8 +474,8 @@ checksum = "0475f8b2ac86659c21b64320d5d653f9efe42acd2a4e560073ec61a155a34f1d"
 dependencies = [
  "bytes",
  "futures-core",
- "http",
- "http-body",
+ "http 1.1.0",
+ "http-body 1.0.0",
  "pin-project-lite",
 ]
 
@@ -416,8 +495,8 @@ dependencies = [
  "futures-channel",
  "futures-util",
  "h2",
- "http",
- "http-body",
+ "http 1.1.0",
+ "http-body 1.0.0",
  "httparse",
  "itoa",
  "pin-project-lite",
@@ -451,8 +530,8 @@ dependencies = [
  "bytes",
  "futures-channel",
  "futures-util",
- "http",
- "http-body",
+ "http 1.1.0",
+ "http-body 1.0.0",
  "hyper",
  "pin-project-lite",
  "socket2",
@@ -488,6 +567,15 @@ version = "2.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8f518f335dce6725a761382244631d86cf0ccb2863413590b31338feb467f9c3"
 
+[[package]]
+name = "itertools"
+version = "0.12.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ba291022dbbd398a455acf126c1e341954079855bc60dfdda641363bd6922569"
+dependencies = [
+ "either",
+]
+
 [[package]]
 name = "itoa"
 version = "1.0.11"
@@ -651,6 +739,116 @@ 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",
+ "thiserror",
+ "urlencoding",
+]
+
+[[package]]
+name = "opentelemetry-http"
+version = "0.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7690dc77bf776713848c4faa6501157469017eaf332baccd4eb1cea928743d94"
+dependencies = [
+ "async-trait",
+ "bytes",
+ "http 0.2.12",
+ "opentelemetry",
+]
+
+[[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 0.2.12",
+ "opentelemetry",
+ "opentelemetry-http",
+ "opentelemetry-proto",
+ "opentelemetry-semantic-conventions",
+ "opentelemetry_sdk",
+ "prost",
+ "thiserror",
+]
+
+[[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-stdout"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4bdf28b381f23afcd150afc0b38a4183dd321fc96320c1554752b6b761648f78"
+dependencies = [
+ "async-trait",
+ "chrono",
+ "futures-util",
+ "opentelemetry",
+ "opentelemetry_sdk",
+ "ordered-float",
+ "serde",
+ "serde_json",
+]
+
+[[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",
+ "thiserror",
+ "tokio",
+ "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 = "percent-encoding"
 version = "2.3.1"
@@ -695,6 +893,12 @@ version = "0.3.30"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d231b230927b5e4ad203db57bbcbee2802f6bce620b1e4a9024a07d94e2907ec"
 
+[[package]]
+name = "ppv-lite86"
+version = "0.2.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5b40af805b3121feab8a3c29f04d8ad262fa8e0561883e7653e024ae4479e6de"
+
 [[package]]
 name = "proc-macro2"
 version = "1.0.81"
@@ -704,6 +908,29 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "prost"
+version = "0.12.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d0f5d036824e4761737860779c906171497f6d55681139d8312388f8fe398922"
+dependencies = [
+ "bytes",
+ "prost-derive",
+]
+
+[[package]]
+name = "prost-derive"
+version = "0.12.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "19de2de2a00075bf566bee3bd4db014b11587e84184d3f7a791bc17f1a8e9e48"
+dependencies = [
+ "anyhow",
+ "itertools",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.60",
+]
+
 [[package]]
 name = "quote"
 version = "1.0.36"
@@ -713,20 +940,50 @@ dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "rand"
+version = "0.8.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
+dependencies = [
+ "libc",
+ "rand_chacha",
+ "rand_core",
+]
+
+[[package]]
+name = "rand_chacha"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
+dependencies = [
+ "ppv-lite86",
+ "rand_core",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.6.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
+dependencies = [
+ "getrandom",
+]
+
 [[package]]
 name = "reqwest"
 version = "0.12.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "566cafdd92868e0939d3fb961bd0dc25fcfaaed179291093b3d43e6b3150ea10"
 dependencies = [
- "base64",
+ "base64 0.22.1",
  "bytes",
  "encoding_rs",
  "futures-core",
  "futures-util",
  "h2",
- "http",
- "http-body",
+ "http 1.1.0",
+ "http-body 1.0.0",
  "http-body-util",
  "hyper",
  "hyper-tls",
@@ -780,7 +1037,7 @@ version = "2.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "29993a25686778eb88d4189742cd713c9bce943bc54251a33509dc63cbacf73d"
 dependencies = [
- "base64",
+ "base64 0.22.1",
  "rustls-pki-types",
 ]
 
@@ -1039,6 +1296,17 @@ dependencies = [
  "tokio",
 ]
 
+[[package]]
+name = "tokio-stream"
+version = "0.1.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "267ac89e0bec6e691e5813911606935d77c476ff49024f98abcea3e7b15e37af"
+dependencies = [
+ "futures-core",
+ "pin-project-lite",
+ "tokio",
+]
+
 [[package]]
 name = "tokio-util"
 version = "0.7.10"
@@ -1053,6 +1321,27 @@ dependencies = [
  "tracing",
 ]
 
+[[package]]
+name = "tonic"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "76c4eb7a4e9ef9d4763600161f12f5070b92a578e1b634db88a6887844c91a13"
+dependencies = [
+ "async-trait",
+ "base64 0.21.7",
+ "bytes",
+ "http 0.2.12",
+ "http-body 0.4.6",
+ "percent-encoding",
+ "pin-project",
+ "prost",
+ "tokio",
+ "tokio-stream",
+ "tower-layer",
+ "tower-service",
+ "tracing",
+]
+
 [[package]]
 name = "tower"
 version = "0.4.13"
@@ -1089,9 +1378,21 @@ checksum = "c3523ab5a71916ccf420eebdf5521fcef02141234bbc0b8a49f2fdc4544364ef"
 dependencies = [
  "log",
  "pin-project-lite",
+ "tracing-attributes",
  "tracing-core",
 ]
 
+[[package]]
+name = "tracing-attributes"
+version = "0.1.27"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "34704c8d6ebcbc939824180af020566b01a7c01f80641264eba0999f6c2b6be7"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.60",
+]
+
 [[package]]
 name = "tracing-core"
 version = "0.1.32"
@@ -1148,6 +1449,12 @@ dependencies = [
  "percent-encoding",
 ]
 
+[[package]]
+name = "urlencoding"
+version = "2.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "daf8dba3b7eb870caf1ddeed7bc9d2a049f3cfdfae7cb521b087cc33ae4c49da"
+
 [[package]]
 name = "vcpkg"
 version = "0.2.15"
@@ -1424,8 +1731,8 @@ dependencies = [
  "chrono",
  "futures-channel",
  "futures-util",
- "http",
- "http-body",
+ "http 1.1.0",
+ "http-body 1.0.0",
  "js-sys",
  "matchit",
  "pin-project",
@@ -1479,9 +1786,16 @@ dependencies = [
 name = "worker-rust"
 version = "0.1.0"
 dependencies = [
+ "getrandom",
  "graphql_client",
+ "opentelemetry",
+ "opentelemetry-http",
+ "opentelemetry-otlp",
+ "opentelemetry-stdout",
+ "opentelemetry_sdk",
  "reqwest",
  "serde",
+ "serde_json",
  "worker",
 ]
 
diff --git a/Cargo.toml b/Cargo.toml
index efb5d6f..a0a6df8 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -11,6 +11,13 @@ graphql_client = "0.14.0"
 serde = "1.0.200"
 worker = "0.2.0"
 reqwest = { version = "0.12.4", features = ["json"] }
+opentelemetry = { version = "=0.22.0", features = ["otel_unstable"] }
+opentelemetry_sdk = { version="=0.22.1", default-features = false, features = ["trace", "metrics", "rt-tokio-current-thread"] }
+opentelemetry-stdout = { version="0.3.0", default-features = false, features=["trace", "metrics"] }
+getrandom = { version = "0.2.14", features = ["js"] }
+serde_json = "1.0.116"
+opentelemetry-http = { version="0.11.1" }
+opentelemetry-otlp = { version="0.15.0", features = ["metrics", "http-proto"], default-features = false }
 
 [profile.release]
 opt-level = "s" # optimize for size in release builds
diff --git a/package-lock.json b/package-lock.json
index cfd884b..e95841d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -10,7 +10,7 @@
       "devDependencies": {
         "env-cmd": "^10.1.0",
         "get-graphql-schema": "^2.1.2",
-        "wrangler": "^3.53.0"
+        "wrangler": "^3.53.1"
       }
     },
     "node_modules/@cloudflare/kv-asset-handler": {
@@ -318,24 +318,6 @@
         "node": ">= 0.6"
       }
     },
-    "node_modules/cross-env": {
-      "version": "7.0.3",
-      "resolved": "https://registry.npmjs.org/cross-env/-/cross-env-7.0.3.tgz",
-      "integrity": "sha512-+/HKd6EgcQCJGh2PSjZuUitQBQynKor4wrFbRg4DtAgS1aWO+gU52xpH7M9ScGgXSYmAVS9bIJ8EzuaGw0oNAw==",
-      "dev": true,
-      "dependencies": {
-        "cross-spawn": "^7.0.1"
-      },
-      "bin": {
-        "cross-env": "src/bin/cross-env.js",
-        "cross-env-shell": "src/bin/cross-env-shell.js"
-      },
-      "engines": {
-        "node": ">=10.14",
-        "npm": ">=6",
-        "yarn": ">=1"
-      }
-    },
     "node_modules/cross-spawn": {
       "version": "7.0.3",
       "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-7.0.3.tgz",
@@ -1055,9 +1037,9 @@
       }
     },
     "node_modules/wrangler": {
-      "version": "3.53.0",
-      "resolved": "https://registry.npmjs.org/wrangler/-/wrangler-3.53.0.tgz",
-      "integrity": "sha512-JxkvCQekL9j8Mu4CEKM/HEVyDnymWzKQuMUuJH0yum1AilutD5HAP9kVVYmvu7BvwlRyRUAj8TI5OUxXnLCEpQ==",
+      "version": "3.53.1",
+      "resolved": "https://registry.npmjs.org/wrangler/-/wrangler-3.53.1.tgz",
+      "integrity": "sha512-bdMRQdHYdvowIwOhEMFkARIZUh56aDw7HLUZ/2JreBjj760osXE4Fc4L1TCkfRRBWgB6/LKF5LA4OcvORMYmHg==",
       "dev": true,
       "dependencies": {
         "@cloudflare/kv-asset-handler": "0.3.2",
diff --git a/package.json b/package.json
index ed64a4d..91ecb38 100644
--- a/package.json
+++ b/package.json
@@ -10,6 +10,6 @@
   "devDependencies": {
     "env-cmd": "^10.1.0",
     "get-graphql-schema": "^2.1.2",
-    "wrangler": "^3.53.0"
+    "wrangler": "^3.53.1"
   }
 }
diff --git a/src/gql.rs b/src/gql.rs
index 30dfab9..85c69a9 100644
--- a/src/gql.rs
+++ b/src/gql.rs
@@ -1,5 +1,7 @@
 use std::error::Error;
 use graphql_client::GraphQLQuery;
+use opentelemetry::{global, KeyValue};
+use opentelemetry::metrics::Unit;
 
 // The paths are relative to the directory where your `Cargo.toml` is located.
 // Both json and the GraphQL schema language are supported as sources for the schema
@@ -29,7 +31,20 @@ pub async fn perform_my_query(variables: get_workers_analytics_query::Variables)
     let res = client.post("/graphql").json(&request_body).send().await?;
     let response: get_workers_analytics_query::ResponseData = res.json().await?;
     let _ = response.viewer.unwrap().accounts.iter().map(|account| account.workers_invocations_adaptive.iter().map(|worker| {
-        return worker.sum.as_ref().unwrap().subrequests;
+        let subrequests = worker.sum.as_ref().unwrap().subrequests;
+        let meter = global::meter("mylibraryname");
+        let gauge = meter
+            .u64_gauge("my_gauge")
+            .with_description("A gauge set to 1.0")
+            .with_unit(Unit::new("myunit"))
+            .init();
+        gauge.record(
+            subrequests,
+            &[
+                KeyValue::new("mykey1", "myvalue1"),
+                KeyValue::new("mykey2", "myvalue2"),
+            ],
+        );
     }));
     Ok(())
 }
diff --git a/src/lib.rs b/src/lib.rs
index 24da698..7393767 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,9 +1,45 @@
+use opentelemetry::{global, KeyValue};
+use opentelemetry::metrics::{MetricsError, Unit};
+use opentelemetry_otlp::WithExportConfig;
+use opentelemetry_sdk::metrics::SdkMeterProvider;
+use worker::*;
+
 mod gql;
 
-use worker::*;
+fn init_metrics() ->
+                  core::result::Result<SdkMeterProvider, MetricsError> {
+    let export_config = opentelemetry_otlp::ExportConfig {
+        endpoint: "http://localhost:4318/v1/metrics".to_string(),
+        ..opentelemetry_otlp::ExportConfig::default()
+    };
+    let provider = opentelemetry_otlp::new_pipeline()
+        .metrics(opentelemetry_sdk::runtime::TokioCurrentThread)
+        .with_exporter(
+            opentelemetry_otlp::new_exporter()
+                .http()
+                .with_export_config(export_config),
+        )
+        .build();
+    provider
+}
+
+fn flush_and_shutdown(provider: SdkMeterProvider) -> core::result::Result<(), MetricsError> {
+    provider.force_flush()?;
+    provider.shutdown()?;
+    Ok(())
+}
 
 #[event(fetch)]
 async fn main(_req: Request, _env: Env, _ctx: Context) -> Result<Response> {
+    let maybe_provider = init_metrics();
+    let provider = match maybe_provider {
+        Ok(provider) => provider,
+        Err(err) => {
+            console_log!("{}", err.to_string());
+            return Response::error("failed to init metrics", 500);
+        }
+    };
+
     let variables = gql::get_workers_analytics_query::Variables {
         account_tag: Some("".to_string()),
         datetime_start: Some("".to_string()),
@@ -11,5 +47,43 @@ async fn main(_req: Request, _env: Env, _ctx: Context) -> Result<Response> {
         script_name: Some("".to_string()),
     };
     let _ = gql::perform_my_query(variables);
-    Response::ok("Hello, World!")
+
+    // Create a meter from the above MeterProvider.
+    let meter = global::meter("mylibraryname");
+    let counter = meter.u64_counter("my_counter").init();
+    counter.add(
+        10,
+        &[
+            KeyValue::new("mykey1", "myvalue1"),
+            KeyValue::new("mykey2", "myvalue2"),
+        ],
+    );
+
+    // Create a Gauge Instrument.
+    {
+        let gauge = meter
+            .f64_gauge("my_gauge")
+            .with_description("A gauge set to 1.0")
+            .with_unit(Unit::new("myunit"))
+            .init();
+
+        gauge.record(
+            1.0,
+            &[
+                KeyValue::new("mykey1", "myvalue1"),
+                KeyValue::new("mykey2", "myvalue2"),
+            ],
+        );
+    }
+
+    let res = flush_and_shutdown(provider);
+    match res {
+        Ok(_) => {
+            Response::ok("metrics flushed")
+        }
+        Err(err) => {
+            console_log!("{}", err.to_string());
+            Response::error("failed to flushed", 500)
+        }
+    }
 }