Programming language: Go
License: Apache License 2.0
Tags: Web Frameworks    

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English | [中文](README_cn.md)

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Hertz [həːts] is a high-usability, high-performance and high-extensibility Golang HTTP framework that helps developers build microservices. It was designed with reference to other open-source frameworks like fasthttp, gin, echo and combined with the internal requirements in ByteDance. At present, it has been widely used inside ByteDance. Nowadays, more and more microservices use Golang. If you have requirements for microservice performance and hope that the framework can fully meet the internal customizable requirements, Hertz will be a good choice.

Basic Features

  • High usability

During the development process, it is often more important to write the correct code quickly. Therefore, in the iterative process of Hertz, we actively listen to users' opinions and continue to polish the framework, hoping to provide users with a better user experience and help users write correct code faster.

  • High performance

Hertz uses the self-developed high-performance network library Netpoll by default. In some special scenarios, compared to Go Net, Hertz has certain advantages in QPS and time delay. For performance data, please refer to the Echo data in the figure below.

Comparison of four frameworks: [Performance](images/performance-4.png) Comparison of three frameworks: [Performance](images/performance-3.png) For detailed performance data, please refer to hertz-benchmark.

  • High extensibility

Hertz adopts a layered design, providing more interfaces and default extension implementations. Users can also extend by themselves. At the same time, thanks to the layered design of the framework, the extensibility of the framework will be much greater. At present, only stable capabilities are open-sourced to the community. More planning refers to [RoadMap](ROADMAP.md).

  • Multi-protocol support

The Hertz framework provides HTTP1.1, ALPN protocol support natively. In addition, due to the layered design, Hertz even supports custom build protocol resolution logic to meet any needs of protocol layer extensions.

  • Network layer switching capability

Hertz implements the function to switch between Netpoll and Go Net on demand. Users can choose the appropriate network library for different scenarios. And Hertz also supports the extension of network library in the form of plug-ins.


Getting Started


The Hertz-Examples repository provides code out of the box. more

Basic Features

Contains introduction and use of general middleware, context selection, data binding, data rendering, direct access, logging, error handling. more

Service Governance

Contains tracer monitor. more

Framework Extension

Contains network library extensions. more


Apidoc, framework configurable items list. more


Frequently Asked Questions. more


Performance testing can only provide a relative reference. In production, there are many factors that can affect actual performance. We provide the hertz-benchmark project to track and compare the performance of Hertz and other frameworks in different situations for reference.

Related Projects

  • Netpoll: A high-performance network library. Hertz integrated by default.
  • Hertz-Contrib: A partial extension library of Hertz, which users can integrate into Hertz through options according to their needs.
  • Example: Use examples of Hertz. ## Extensions
Extensions Description
Websocket Enable Hertz to support the Websocket protocol.
Pprof Extension for Hertz integration with Pprof.
Sessions Session middleware with multi-state store support.
Obs-opentelemetry Hertz's Opentelemetry extension that supports Metric, Logger, Tracing and works out of the box.
Registry Provides service registry and discovery functions. So far, the supported service discovery extensions are nacos, consul, etcd, eureka, polaris, servicecomb, zookeeper, redis.
Keyauth Provides token-based authentication.
Secure Secure middleware with multiple configuration items.
Sentry Sentry extension provides some unified interfaces to help users perform real-time error monitoring.
Requestid Add request id in response.
Limiter Provides a current limiter based on the bbr algorithm.
Jwt Jwt extension.
Autotls Make Hertz support Let's Encrypt.
Monitor-prometheus Provides service monitoring based on Prometheus.
I18n Helps translate Hertz programs into multi programming languages.
Reverseproxy Implement a reverse proxy.
Opensergo The Opensergo extension.
Gzip A Gzip extension with multiple options.
Cors Provides cross-domain resource sharing support.
Swagger Automatically generate RESTful API documentation with Swagger 2.0.
Tracer Link tracing based on Opentracing.
Recovery Recovery middleware for Hertz.
Basicauth Basicauth middleware can provide HTTP basic authentication.
Lark Use hertz handle Lark/Feishu card message and event callback.
Logger Logger extension for Hertz, which provides support for zap, logrus, zerologs logging frameworks.




[Hertz RoadMap](ROADMAP.md)


Hertz is distributed under the Apache License, version 2.0. The licenses of third party dependencies of Hertz are explained here.



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*Note that all licence references and agreements mentioned in the Hertz README section above are relevant to that project's source code only.