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wtf is micrometer?

fieldju/micrometer — explained in plain English

Analysis updated 2026-07-17 · repo last pushed 2020-06-29

Audience · developerComplexity · 3/5DormantSetup · moderate

TL;DR

Micrometer is a Java library that measures app performance (requests, timing, memory) and sends that data to any monitoring tool like Prometheus or Datadog without changing your code.

Mindmap

mindmap
  root((repo))
    What it does
      Metrics library
      Vendor neutral
      Measures performance
    Tech stack
      Java
      Spring Boot
    Use cases
      Track requests
      Time queries
      Monitor health
    Audience
      Java developers
      DevOps teams
    Notable
      VMware sponsored
      Active Slack community

Code map

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Why would anyone build with this?

REASON 1

Track how long database queries take across a Java application.

REASON 2

Monitor request counts and failure rates for microservices.

REASON 3

Expose real-time performance metrics to ops dashboards.

REASON 4

Switch monitoring backends without rewriting instrumentation code.

What's in the stack?

JavaSpring Boot

How it stacks up

fieldju/micrometer0verflowme/alarm-clock0xhassaan/nn-from-scratch
Stars——0
Language—CSSPython
Last pushed2020-06-292022-10-03—
MaintenanceDormantDormant—
Setup difficultymoderateeasymoderate
Complexity3/52/54/5
Audiencedevelopervibe coderdeveloper

Figures from each repo's GitHub metadata at analysis time.

How do you spin it up?

Difficulty · moderate Time to first run · 30min

Requires wiring up a monitoring backend (e.g. Prometheus, Datadog) to actually view the collected metrics.

Yoink these prompts

Prompt 1
Show me how to add Micrometer to a Spring Boot app to track HTTP request latency.
Prompt 2
Write Micrometer code to count failed login attempts in a Java service.
Prompt 3
Explain how to configure Micrometer to send metrics to Prometheus.
Prompt 4
Help me add a Micrometer timer around a database query in my Java app.

Frequently asked questions

wtf is micrometer?

Micrometer is a Java library that measures app performance (requests, timing, memory) and sends that data to any monitoring tool like Prometheus or Datadog without changing your code.

Is micrometer actively maintained?

Dormant — no commits in 2+ years (last push 2020-06-29).

How hard is micrometer to set up?

Setup difficulty is rated moderate, with roughly 30min to a first successful run.

Who is micrometer for?

Mainly developer.

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