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Performance

Easegress supports compression and caching in HTTPPipeline and HTTPServer for improving performance purposes as a revert proxy.

Basic: Load Balance

name: pipeline-reverse-proxy
kind: HTTPPipeline
flow:
  - filter: proxy
filters:
  - name: proxy
    kind: Proxy
    mainPool:
      servers:
      - url: https://127.0.0.1:9095
      - url: https://127.0.0.1:9096
      - url: https://127.0.0.1:9097
      loadBalance:
        policy: roundRobin

Performance: Compression and Caching

Compression in filter Proxy

  • Easegress proxy filter supports gzip type compression. It can save the bandwidth between the client and Easegress and reduce the time cost.
name: pipeline-reverse-proxy
kind: HTTPPipeline
flow:
  - filter: proxy
filters:
  - name: proxy
    kind: Proxy
#...
    compression:
      minLength: 1024
#...

  • As the example above, we only need to value the minLength field to tell Easegress' proxy filter compressing response body whose size is bigger than minLength. Also, it will add the gzip header automatically if it's truly compressed.

  • For the full yaml, see here

Caching in filter Proxy

  • Easegress proxy filter has a pool section for describing the traffic forwarding backends. And it also supports caching the response according to the HTTP Methods and the HTTP response code. Recommend enabling this feature only in the routing static resources scenario.
name: pipeline-reverse-proxy
kind: HTTPPipeline
flow:
  - filter: proxy
filters:
  - name: proxy
    kind: Proxy
    mainPool:
#...
      memoryCache:
        expiration: 10s
        maxEntryBytes: 4096
        codes:
        - 200
        - 201
        methods:
        - GET
        - HEAD
#...

  • The example above will cache the response which size is smaller than 4096, and the response code is 200 or 201, with the HTTP methods Get and Head.

  • For the full YAML, see here

Caching in HTTPServer

  • As a traffic gate of Easegress, HTTPServer also supports caching routing rules. It reduces the HTTPServer route searching cost. HTTPServer will use the request's Host, Method, and Path to form a key for the build-in LRU rule cache.
kind: HTTPServer
name: http-server-example
port: 10080
https: false
#...
cacheSize: 10240
#...

  • As the example above, all we need is to set the cacheSize to indicated the LRU cache's size. It will disuse the least used cache rules firstly.

  • For the full YAML, see here

References

Proxy Compression

name: pipeline-reverse-proxy
kind: HTTPPipeline
flow:
  - filter: proxy
filters:
  - name: proxy
    kind: Proxy
    mainPool:
      servers:
      - url: https://127.0.0.1:9095
      - url: https://127.0.0.1:9096
      - url: https://127.0.0.1:9097
      loadBalance:
        policy: roundRobin
     compression:
       minLength: 1024

Proxy Caching

name: pipeline-reverse-proxy
kind: HTTPPipeline
flow:
  - filter: proxy
filters:
  - name: proxy
    kind: Proxy
    mainPool:
      servers:
      - url: https://127.0.0.1:9095
      - url: https://127.0.0.1:9096
      - url: https://127.0.0.1:9097
      loadBalance:
        policy: roundRobin
      memoryCache:
        expiration: 10s
        maxEntryBytes: 4096
        codes:
        - 200
        - 201
        methods:
        - GET
        - HEAD

HTTPServer route rule caching

kind: HTTPServer
name: http-server-example
port: 10080
https: false
http3: false
keyBase64:
certBase64:
keepAlive: true
keepAliveTimeout: 75s
maxConnection: 10240
cacheSize: 10240
rules:
  - paths:
    - pathPrefix: /pipeline
      backend: http-pipeline-example
    - pathPrefix: /remote
      backend: remote-pipeline
      headers:
      - key: X-Activity-No
        values: [ "123456", "124456" ]
        backend: remote-pipeline1
      - key: X-Activity-No
        values: [ "224456" ]
        regexp: ^224.*$
        backend: remote-pipeline2
      - key: X-Activity-No
        regexp: ^324.*$
        backend: remote-pipeline2
    - path: /func
      backend: func-mirror