257 lines
6.6 KiB
Markdown
257 lines
6.6 KiB
Markdown
---
|
|
title: "Traefik Compress Documentation"
|
|
description: "Traefik Proxy's HTTP middleware lets you compress responses before sending them to the client. Read the technical documentation."
|
|
---
|
|
|
|
# Compress
|
|
|
|
Compress Allows Compressing Responses before Sending them to the Client
|
|
{: .subtitle }
|
|
|
|
|
|
|
|
The Compress middleware supports Gzip, Brotli and Zstandard compression.
|
|
The activation of compression, and the compression method choice rely (among other things) on the request's `Accept-Encoding` header.
|
|
|
|
## Configuration Examples
|
|
|
|
```yaml tab="Docker & Swarm"
|
|
# Enable compression
|
|
labels:
|
|
- "traefik.http.middlewares.test-compress.compress=true"
|
|
```
|
|
|
|
```yaml tab="Kubernetes"
|
|
# Enable compression
|
|
apiVersion: traefik.io/v1alpha1
|
|
kind: Middleware
|
|
metadata:
|
|
name: test-compress
|
|
spec:
|
|
compress: {}
|
|
```
|
|
|
|
```yaml tab="Consul Catalog"
|
|
# Enable compression
|
|
- "traefik.http.middlewares.test-compress.compress=true"
|
|
```
|
|
|
|
```yaml tab="File (YAML)"
|
|
# Enable compression
|
|
http:
|
|
middlewares:
|
|
test-compress:
|
|
compress: {}
|
|
```
|
|
|
|
```toml tab="File (TOML)"
|
|
# Enable compression
|
|
[http.middlewares]
|
|
[http.middlewares.test-compress.compress]
|
|
```
|
|
|
|
!!! info
|
|
|
|
Responses are compressed when the following criteria are all met:
|
|
|
|
* The `Accept-Encoding` request header contains `gzip`, and/or `*`, and/or `br`, and/or `zstd` with or without [quality values](https://developer.mozilla.org/en-US/docs/Glossary/Quality_values).
|
|
If the `Accept-Encoding` request header is absent and no [defaultEncoding](#defaultencoding) is configured, the response won't be encoded.
|
|
If it is present, but its value is the empty string, then compression is disabled.
|
|
* The response is not already compressed, i.e. the `Content-Encoding` response header is not already set.
|
|
* The response`Content-Type` header is not one among the [excludedContentTypes options](#excludedcontenttypes), or is one among the [includedContentTypes options](#includedcontenttypes).
|
|
* The response body is larger than the [configured minimum amount of bytes](#minresponsebodybytes) (default is `1024`).
|
|
|
|
## Configuration Options
|
|
|
|
### `excludedContentTypes`
|
|
|
|
_Optional, Default=""_
|
|
|
|
`excludedContentTypes` specifies a list of content types to compare the `Content-Type` header of the incoming requests and responses before compressing.
|
|
|
|
The responses with content types defined in `excludedContentTypes` are not compressed.
|
|
|
|
Content types are compared in a case-insensitive, whitespace-ignored manner.
|
|
|
|
!!! info
|
|
|
|
The `excludedContentTypes` and `includedContentTypes` options are mutually exclusive.
|
|
|
|
!!! info "In the case of gzip"
|
|
|
|
If the `Content-Type` header is not defined, or empty, the compress middleware will automatically [detect](https://mimesniff.spec.whatwg.org/) a content type.
|
|
It will also set the `Content-Type` header according to the detected MIME type.
|
|
|
|
!!! info "gRPC"
|
|
|
|
Note that `application/grpc` is never compressed.
|
|
|
|
```yaml tab="Docker & Swarm"
|
|
labels:
|
|
- "traefik.http.middlewares.test-compress.compress.excludedcontenttypes=text/event-stream"
|
|
```
|
|
|
|
```yaml tab="Kubernetes"
|
|
apiVersion: traefik.io/v1alpha1
|
|
kind: Middleware
|
|
metadata:
|
|
name: test-compress
|
|
spec:
|
|
compress:
|
|
excludedContentTypes:
|
|
- text/event-stream
|
|
```
|
|
|
|
```yaml tab="Consul Catalog"
|
|
- "traefik.http.middlewares.test-compress.compress.excludedcontenttypes=text/event-stream"
|
|
```
|
|
|
|
```yaml tab="File (YAML)"
|
|
http:
|
|
middlewares:
|
|
test-compress:
|
|
compress:
|
|
excludedContentTypes:
|
|
- text/event-stream
|
|
```
|
|
|
|
```toml tab="File (TOML)"
|
|
[http.middlewares]
|
|
[http.middlewares.test-compress.compress]
|
|
excludedContentTypes = ["text/event-stream"]
|
|
```
|
|
|
|
### `includedContentTypes`
|
|
|
|
_Optional, Default=""_
|
|
|
|
`includedContentTypes` specifies a list of content types to compare the `Content-Type` header of the responses before compressing.
|
|
|
|
The responses with content types defined in `includedContentTypes` are compressed.
|
|
|
|
Content types are compared in a case-insensitive, whitespace-ignored manner.
|
|
|
|
!!! info
|
|
|
|
The `excludedContentTypes` and `includedContentTypes` options are mutually exclusive.
|
|
|
|
```yaml tab="Docker & Swarm"
|
|
labels:
|
|
- "traefik.http.middlewares.test-compress.compress.includedcontenttypes=application/json,text/html,text/plain"
|
|
```
|
|
|
|
```yaml tab="Kubernetes"
|
|
apiVersion: traefik.io/v1alpha1
|
|
kind: Middleware
|
|
metadata:
|
|
name: test-compress
|
|
spec:
|
|
compress:
|
|
includedContentTypes:
|
|
- application/json
|
|
- text/html
|
|
- text/plain
|
|
```
|
|
|
|
```yaml tab="Consul Catalog"
|
|
- "traefik.http.middlewares.test-compress.compress.includedcontenttypes=application/json,text/html,text/plain"
|
|
```
|
|
|
|
```yaml tab="File (YAML)"
|
|
http:
|
|
middlewares:
|
|
test-compress:
|
|
compress:
|
|
includedContentTypes:
|
|
- application/json
|
|
- text/html
|
|
- text/plain
|
|
```
|
|
|
|
```toml tab="File (TOML)"
|
|
[http.middlewares]
|
|
[http.middlewares.test-compress.compress]
|
|
includedContentTypes = ["application/json","text/html","text/plain"]
|
|
```
|
|
|
|
### `minResponseBodyBytes`
|
|
|
|
_Optional, Default=1024_
|
|
|
|
`minResponseBodyBytes` specifies the minimum amount of bytes a response body must have to be compressed.
|
|
|
|
Responses smaller than the specified values will not be compressed.
|
|
|
|
```yaml tab="Docker & Swarm"
|
|
labels:
|
|
- "traefik.http.middlewares.test-compress.compress.minresponsebodybytes=1200"
|
|
```
|
|
|
|
```yaml tab="Kubernetes"
|
|
apiVersion: traefik.io/v1alpha1
|
|
kind: Middleware
|
|
metadata:
|
|
name: test-compress
|
|
spec:
|
|
compress:
|
|
minResponseBodyBytes: 1200
|
|
```
|
|
|
|
```yaml tab="Consul Catalog"
|
|
- "traefik.http.middlewares.test-compress.compress.minresponsebodybytes=1200"
|
|
```
|
|
|
|
```yaml tab="File (YAML)"
|
|
http:
|
|
middlewares:
|
|
test-compress:
|
|
compress:
|
|
minResponseBodyBytes: 1200
|
|
```
|
|
|
|
```toml tab="File (TOML)"
|
|
[http.middlewares]
|
|
[http.middlewares.test-compress.compress]
|
|
minResponseBodyBytes = 1200
|
|
```
|
|
|
|
### `defaultEncoding`
|
|
|
|
_Optional, Default=""_
|
|
|
|
`defaultEncoding` specifies the default encoding if the `Accept-Encoding` header is not in the request or contains a wildcard (`*`).
|
|
|
|
There is no fallback on the `defaultEncoding` when the header value is empty or unsupported.
|
|
|
|
```yaml tab="Docker & Swarm"
|
|
labels:
|
|
- "traefik.http.middlewares.test-compress.compress.defaultEncoding=gzip"
|
|
```
|
|
|
|
```yaml tab="Kubernetes"
|
|
apiVersion: traefik.io/v1alpha1
|
|
kind: Middleware
|
|
metadata:
|
|
name: test-compress
|
|
spec:
|
|
compress:
|
|
defaultEncoding: gzip
|
|
```
|
|
|
|
```yaml tab="Consul Catalog"
|
|
- "traefik.http.middlewares.test-compress.compress.defaultEncoding=gzip"
|
|
```
|
|
|
|
```yaml tab="File (YAML)"
|
|
http:
|
|
middlewares:
|
|
test-compress:
|
|
compress:
|
|
defaultEncoding: gzip
|
|
```
|
|
|
|
```toml tab="File (TOML)"
|
|
[http.middlewares]
|
|
[http.middlewares.test-compress.compress]
|
|
defaultEncoding = "gzip"
|
|
```
|