# @opentelemetry/instrumentation-memcached

> OpenTelemetry instrumentation for `memcached` database client for memcached

Latest version **0.66.0** (published 2026-10-06) · Apache-2.0 license · 0 weekly downloads

## Install

```sh
npm install @opentelemetry/instrumentation-memcached
pnpm add @opentelemetry/instrumentation-memcached
yarn add @opentelemetry/instrumentation-memcached
bun add @opentelemetry/instrumentation-memcached
```

## Health

**Score 70/100 (B)** — status: active.

Positive: has types; no vulnerabilities; has provenance; recently updated; high maintenance score; high quality score.

Warnings: low downloads; no esm support; pre 1.0.

## Facts

| | |
|---|---|
| Version | 0.66.0 |
| Published | 2026-10-06 |
| First published | 2021-07-02 |
| Weekly downloads | 0 |
| License | Apache-2.0 |
| TypeScript types | bundled |
| Module format | CommonJS |
| Node | ^18.19.0 \|\| >=20.6.0 |
| Dependencies | 3 |
| Unpacked size | 40.1 KB |
| Known vulnerabilities | 0 |
| Install scripts | no |
| Provenance | attested (GitHub Actions) |
| GitHub stars | 931 |
| Author | OpenTelemetry Authors |
| Maintainers | dyladan, pichlermarc, overbalance, npmjs-account, trentm, martinkuba |
| Keywords | instrumentation, memcached, nodejs, opentelemetry, profiling, tracing |

## Links

- npm: https://www.npmjs.com/package/@opentelemetry/instrumentation-memcached
- Repository: https://github.com/open-telemetry/opentelemetry-js-contrib
- Homepage: https://github.com/open-telemetry/opentelemetry-js-contrib/tree/main/packages/instrumentation-memcached#readme
- Issues: https://github.com/open-telemetry/opentelemetry-js-contrib/issues
- npm.io page: https://npm.io/package/@opentelemetry/instrumentation-memcached

## Dependencies (3)

- [@types/memcached](https://npm.io/package/@types/memcached.md) ^2.2.6
- [@opentelemetry/instrumentation](https://npm.io/package/@opentelemetry/instrumentation.md) ^0.223.0
- [@opentelemetry/semantic-conventions](https://npm.io/package/@opentelemetry/semantic-conventions.md) ^1.33.0

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- [cache2](https://npm.io/package/cache2.md) — 1.5K weekly downloads

## Recent versions

- 0.66.0 (latest) — 2026-10-06
- 0.65.0 — 2026-08-31
- 0.64.0 — 2026-07-23
- 0.63.0 — 2026-07-03
- 0.62.0 — 2026-06-11
- 0.61.0 — 2026-05-13
- 0.60.0 — 2026-05-06
- 0.59.0 — 2026-04-29
- 0.58.0 — 2026-04-17
- 0.57.0 — 2026-03-26
- 0.56.0 — 2026-03-04
- 0.55.0 — 2026-02-17
- 0.54.0 — 2026-01-22
- 0.53.0 — 2026-01-15
- 0.52.1 — 2025-12-17
- … 44 more at https://npm.io/package/@opentelemetry/instrumentation-memcached/versions

## README

# OpenTelemetry Memcached Instrumentation for Node.js

[![NPM Published Version][npm-img]][npm-url]
[![Apache License][license-image]][license-image]

This module provides automatic instrumentation for the [`memcached@>=2.2.0`][repo-url] module.

If total installation size is not constrained, it is recommended to use the [`@opentelemetry/auto-instrumentations-node`](https://www.npmjs.com/package/@opentelemetry/auto-instrumentations-node) bundle with [@opentelemetry/sdk-node](https://www.npmjs.com/package/@opentelemetry/sdk-node) for the most seamless instrumentation experience.

Compatible with OpenTelemetry JS API and SDK `1.0+`.

## Installation

```bash
npm install --save @opentelemetry/instrumentation-memcached
```

### Supported Versions

- [`memcached`](https://www.npmjs.com/package/memcached) versions `>=2.2.0 <3`

## Usage

OpenTelemetry Memcached Instrumentation allows the user to automatically collect trace data and export them to the backend of choice, to give observability to distributed systems when working with [memcached][pkg-url].

To enable a specific instrumentation, pass it to `registerInstrumentations()`.
This is commonly done via `NodeSDK` for fully setting up all OpenTelemetry SDK components:

```js
const { NodeSDK } = require('@opentelemetry/sdk-node');
const { MemcachedInstrumentation } = require('@opentelemetry/instrumentation-memcached');

const sdk = new NodeSDK({
  instrumentations: [
    new MemcachedInstrumentation({
      // See below for configuration options.
    }),
  ],
});
sdk.start();
process.once('beforeExit', async () => { await sdk.shutdown(); });
```

### Configuration Options

| Option                      | Type      | Example | Description                                                                                                                  |
| --------------------------- | --------- | ------- | ---------------------------------------------------------------------------------------------------------------------------- |
| `enhancedDatabaseReporting` | `boolean` | `false` | Include full command statement in the span - **leaks potentially sensitive information to your spans**. Defaults to `false`. |

## Semantic Conventions

The `@opentelemetry/instrumentation-memcached` versions 0.63.0 and later emit the stable semantic conventions.

Attributes collected:

| Attribute           | Description                                                                             |
| ------------------- | --------------------------------------------------------------------------------------- |
| `db.system.name`    | 'memcached'                                                                             |
| `db.operation.name` | The name of the operation being executed.                                               |
| `db.query.text`     | The database statement being executed (only if `enhancedDatabaseReporting` is enabled). |
| `server.address`    | Remote hostname or similar.                                                             |
| `server.port`       | Remote port number.                                                                     |

## Useful links

- For more information on OpenTelemetry, visit: <https://opentelemetry.io/>
- For more about OpenTelemetry JavaScript: <https://github.com/open-telemetry/opentelemetry-js>
- For help or feedback on this project, join us in [GitHub Discussions][discussions-url]

## License

Apache 2.0 - See [LICENSE][license-url] for more information.

[discussions-url]: https://github.com/open-telemetry/opentelemetry-js/discussions
[license-url]: https://github.com/open-telemetry/opentelemetry-js-contrib/blob/main/LICENSE
[license-image]: https://img.shields.io/badge/license-Apache_2.0-green.svg?style=flat
[npm-url]: https://www.npmjs.com/package/@opentelemetry/instrumentation-memcached
[npm-img]: https://badge.fury.io/js/%40opentelemetry%2Finstrumentation-memcached.svg
[repo-url]: https://github.com/3rd-Eden/memcached
[pkg-url]: https://www.npmjs.com/package/memcached

---
_Source: https://npm.io/package/@opentelemetry/instrumentation-memcached · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._