@opentelemetry/instrumentation-memcached

What is @opentelemetry/instrumentation-memcached?

@opentelemetry/instrumentation-memcached is an OpenTelemetry instrumentation library for Memcached. It allows you to automatically collect and report metrics and traces for Memcached operations, helping you monitor and debug your Memcached usage in a distributed system.

What are @opentelemetry/instrumentation-memcached's main functionalities?

Automatic Tracing

This feature allows you to automatically trace all Memcached operations. The code sample shows how to set up the NodeTracerProvider and register the Memcached instrumentation.

const { NodeTracerProvider } = require('@opentelemetry/node');
const { registerInstrumentations } = require('@opentelemetry/instrumentation');
const { MemcachedInstrumentation } = require('@opentelemetry/instrumentation-memcached');

const provider = new NodeTracerProvider();
provider.register();

registerInstrumentations({
  instrumentations: [
    new MemcachedInstrumentation(),
  ],
});

Custom Configuration

This feature allows you to customize the instrumentation by adding hooks for requests and responses. The code sample demonstrates how to set custom attributes on spans for Memcached commands and responses.

const { MemcachedInstrumentation } = require('@opentelemetry/instrumentation-memcached');

const memcachedInstrumentation = new MemcachedInstrumentation({
  requestHook: (span, requestInfo) => {
    span.setAttribute('memcached.command', requestInfo.command);
  },
  responseHook: (span, responseInfo) => {
    span.setAttribute('memcached.response', responseInfo.response);
  }
});

Other packages similar to @opentelemetry/instrumentation-memcached

@opentelemetry/instrumentation-redis

@opentelemetry/instrumentation-redis is a similar package for Redis. It provides automatic tracing and metrics collection for Redis operations. Like @opentelemetry/instrumentation-memcached, it helps in monitoring and debugging Redis usage in a distributed system.

README

OpenTelemetry Memcached Instrumentation for Node.js

This module provides automatic instrumentation for the memcached@>=2.2.0 module, which may be loaded using the @opentelemetry/sdk-trace-node package and is included in the @opentelemetry/auto-instrumentations-node bundle.

If total installation size is not constrained, it is recommended to use the @opentelemetry/auto-instrumentations-node bundle with @opentelemetry/sdk-node for the most seamless instrumentation experience.

Compatible with OpenTelemetry JS API and SDK 1.0+.

Installation

npm install --save @opentelemetry/instrumentation-memcached

Supported Versions

• 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.

To load a specific instrumentation (memcached in this case), specify it in the registerInstrumentations' configuration

const { NodeTracerProvider } = require('@opentelemetry/sdk-trace-node');
const { MemcachedInstrumentation } = require('@opentelemetry/instrumentation-memcached');
const { registerInstrumentations } = require('@opentelemetry/instrumentation');

const provider = new NodeTracerProvider();
provider.register();

registerInstrumentations({
  instrumentations: [
    new MemcachedInstrumentation({
      enhancedDatabaseReporting: false,
    }),
  ],
});

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

This package uses @opentelemetry/semantic-conventions version 1.22+, which implements Semantic Convention Version 1.7.0

Attributes collected:

Attribute	Short Description
db.operation	The name of the operation being executed.
db.statement	The database statement being executed.
db.system	An identifier for the database management system (DBMS) product being used.
net.peer.name	Remote hostname or similar.
net.peer.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

License

Apache 2.0 - See LICENSE for more information.