Add encodings option to the compression middleware

docs/content/middlewares/http/compress.md

@@ -255,3 +255,48 @@ http:
   [http.middlewares.test-compress.compress]
     defaultEncoding = "gzip"
 ```
+
+### `encodings`
+
+_Optional, Default="zstd, br, gzip"_
+
+`encodings` specifies the list of supported compression encodings.
+At least one encoding value must be specified, and valid entries are `zstd` (Zstandard), `br` (Brotli), and `gzip` (Gzip).
+The order of the list also sets the priority, the top entry has the highest priority.
+
+```yaml tab="Docker & Swarm"
+labels:
+  - "traefik.http.middlewares.test-compress.compress.encodings=zstd,br"
+```
+
+```yaml tab="Kubernetes"
+apiVersion: traefik.io/v1alpha1
+kind: Middleware
+metadata:
+  name: test-compress
+spec:
+  compress:
+    encodings:
+      - zstd
+      - br
+```
+
+```yaml tab="Consul Catalog"
+- "traefik.http.middlewares.test-compress.compress.encodings=zstd,br"
+```
+
+```yaml tab="File (YAML)"
+http:
+  middlewares:
+    test-compress:
+      compress:
+        encodings:
+          - zstd
+          - br
+```
+
+```toml tab="File (TOML)"
+[http.middlewares]
+  [http.middlewares.test-compress.compress]
+    encodings = ["zstd","br"]
+```

docs/content/reference/dynamic-configuration/docker-labels.yml

@@ -19,6 +19,7 @@
 - "traefik.http.middlewares.middleware05.circuitbreaker.responsecode=42"
 - "traefik.http.middlewares.middleware06.compress=true"
 - "traefik.http.middlewares.middleware06.compress.defaultencoding=foobar"
+- "traefik.http.middlewares.middleware06.compress.encodings=foobar, foobar"
 - "traefik.http.middlewares.middleware06.compress.excludedcontenttypes=foobar, foobar"
 - "traefik.http.middlewares.middleware06.compress.includedcontenttypes=foobar, foobar"
 - "traefik.http.middlewares.middleware06.compress.minresponsebodybytes=42"

docs/content/reference/dynamic-configuration/file.toml

@@ -143,6 +143,7 @@
         excludedContentTypes = ["foobar", "foobar"]
         includedContentTypes = ["foobar", "foobar"]
         minResponseBodyBytes = 42
+        encodings = ["foobar", "foobar"]
         defaultEncoding = "foobar"
     [http.middlewares.Middleware07]
       [http.middlewares.Middleware07.contentType]

docs/content/reference/dynamic-configuration/file.yaml

@@ -152,6 +152,9 @@ http:
           - foobar
           - foobar
         minResponseBodyBytes: 42
+        encodings:
+          - foobar
+          - foobar
         defaultEncoding: foobar
     Middleware07:
       contentType:

docs/content/reference/dynamic-configuration/kubernetes-crd-definition-v1.yml

@@ -904,7 +904,7 @@ spec:
               compress:
                 description: |-
                   Compress holds the compress middleware configuration.
-                  This middleware compresses responses before sending them to the client, using gzip compression.
+                  This middleware compresses responses before sending them to the client, using gzip, brotli, or zstd compression.
                   More info: https://doc.traefik.io/traefik/v3.1/middlewares/http/compress/
                 properties:
                   defaultEncoding:
@@ -912,6 +912,12 @@ spec:
                       the `Accept-Encoding` header is not in the request or contains
                       a wildcard (`*`).
                     type: string
+                  encodings:
+                    description: Encodings defines the list of supported compression
+                      algorithms.
+                    items:
+                      type: string
+                    type: array
                   excludedContentTypes:
                     description: |-
                       ExcludedContentTypes defines the list of content types to compare the Content-Type header of the incoming requests and responses before compressing.

docs/content/reference/dynamic-configuration/kv-ref.md

@@ -22,6 +22,8 @@ THIS FILE MUST NOT BE EDITED BY HAND
 | `traefik/http/middlewares/Middleware05/circuitBreaker/recoveryDuration` | `42s` |
 | `traefik/http/middlewares/Middleware05/circuitBreaker/responseCode` | `42` |
 | `traefik/http/middlewares/Middleware06/compress/defaultEncoding` | `foobar` |
+| `traefik/http/middlewares/Middleware06/compress/encodings/0` | `foobar` |
+| `traefik/http/middlewares/Middleware06/compress/encodings/1` | `foobar` |
 | `traefik/http/middlewares/Middleware06/compress/excludedContentTypes/0` | `foobar` |
 | `traefik/http/middlewares/Middleware06/compress/excludedContentTypes/1` | `foobar` |
 | `traefik/http/middlewares/Middleware06/compress/includedContentTypes/0` | `foobar` |

docs/content/reference/dynamic-configuration/traefik.io_middlewares.yaml

@@ -180,7 +180,7 @@ spec:
               compress:
                 description: |-
                   Compress holds the compress middleware configuration.
-                  This middleware compresses responses before sending them to the client, using gzip compression.
+                  This middleware compresses responses before sending them to the client, using gzip, brotli, or zstd compression.
                   More info: https://doc.traefik.io/traefik/v3.1/middlewares/http/compress/
                 properties:
                   defaultEncoding:
@@ -188,6 +188,12 @@ spec:
                       the `Accept-Encoding` header is not in the request or contains
                       a wildcard (`*`).
                     type: string
+                  encodings:
+                    description: Encodings defines the list of supported compression
+                      algorithms.
+                    items:
+                      type: string
+                    type: array
                   excludedContentTypes:
                     description: |-
                       ExcludedContentTypes defines the list of content types to compare the Content-Type header of the incoming requests and responses before compressing.