Prometheus instrumentation library for Go applications
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beorn7 31318b7523 Switch to base-2 buckets
This seem what OTel is converging towards, see
https://github.com/open-telemetry/oteps/pull/149 .

I see pros and cons with base-10 vs base-2. They are discussed in
detail in that OTel PR, and the gist of the discussion is pretty much
in line with my design doc. Since the balance is easy to tip here, I
think we should go with base-2 if OTel picks base-2. This also seems
to be in agreement with several proprietary solution (see again the
discussion on that OTel PR.)

The idea to make the number of buckets per power of 2 (or formerly 10)
a power of 2 itself was also sketched out in the design doc
already. It guarantees mergeability of different resolutions. I was
undecided between making it a recommendation or mandatory. Now I think
it should be mandatory as it has the additional benefit of playing
well with OTel's plans.

This commit also addresses a number of outstanding TODOs.

Signed-off-by: beorn7 <beorn@grafana.com>
2021-06-23 16:48:03 +02:00
.circleci Update common Prometheus files 2021-03-31 00:01:21 +00:00
.github Release v0.9.0 2018-10-15 13:28:28 +02:00
api add exemplars API support 2021-04-24 00:32:14 -04:00
examples Switch to base-2 buckets 2021-06-23 16:48:03 +02:00
prometheus Switch to base-2 buckets 2021-06-23 16:48:03 +02:00
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CHANGELOG.md Address minor issues on Changelog 2021-06-07 18:44:51 +02:00
CODE_OF_CONDUCT.md Update common Prometheus files 2020-06-23 00:08:53 +00:00
CONTRIBUTING.md Mention the DCO in the contributing guide 2018-05-31 14:22:30 +00:00
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LICENSE License cleanup 2015-01-22 16:13:15 +01:00
MAINTAINERS.md Change maintainers from @beorn7 to @bwplotka/@kakkoyun (#873) 2021-06-01 14:13:09 +01:00
Makefile Add lint:ignore for protobuf deprecation 2020-05-14 20:11:22 +02:00
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NOTICE Create a public registry interface and separate out HTTP exposition 2016-08-02 18:46:22 +02:00
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README.md

Prometheus Go client library

Build Status Go Report Card go-doc

This is the Go client library for Prometheus. It has two separate parts, one for instrumenting application code, and one for creating clients that talk to the Prometheus HTTP API.

This library requires Go1.13 or later.

Important note about releases and stability

This repository generally follows Semantic Versioning. However, the API client in prometheus/client_golang/api/… is still considered experimental. Breaking changes of the API client will not trigger a new major release. The same is true for selected other new features explicitly marked as EXPERIMENTAL in CHANGELOG.md.

Features that require breaking changes in the stable parts of the repository are being batched up and tracked in the v2 milestone. The v2 development happens in a separate branch for the time being. v2 releases off that branch will happen once sufficient stability is reached. In view of the widespread use of this repository, v1 and v2 will coexist for a while to enable a convenient transition.

Instrumenting applications

code-coverage go-doc

The prometheus directory contains the instrumentation library. See the guide on the Prometheus website to learn more about instrumenting applications.

The examples directory contains simple examples of instrumented code.

Client for the Prometheus HTTP API

code-coverage go-doc

The api/prometheus directory contains the client for the Prometheus HTTP API. It allows you to write Go applications that query time series data from a Prometheus server. It is still in alpha stage.

Where is model, extraction, and text?

The model packages has been moved to prometheus/common/model.

The extraction and text packages are now contained in prometheus/common/expfmt.

Contributing and community

See the contributing guidelines and the Community section of the homepage.