Envoy 1.9.0 已釋出，Envoy 是一個 L7 代理和通訊匯流排，專為大型現代服務架構而設計。這個專案誕生源於以下目標：

對於應用程式而言，網路應該是透明的，當發生網路和應用程式故障時，能夠很容易定位出問題的根源。

該版本包含大量更新內容，部分如下：

• access log: added a JSON logging mode to output access logs in JSON format.

• access log: added dynamic metadata to access log messages streamed over gRPC.

• access log: added DOWNSTREAM_CONNECTION_TERMINATION.

• admin: POST /logging now responds with 200 while there are no params.

• admin: added support for displaying subject alternate names in certs end point.

• admin: added host weight to the GET /clusters?format=json end point response.

• admin: GET /server_info now responds with a JSON object instead of a single string.

• admin: GET /server_info now exposes what stage of initialization the server is currently in.

• admin: added support for displaying command line options in GET /server_info end point.

• circuit-breaker: added cx_open, rq_pending_open, rq_open and rq_retry_open gauges to expose live state via circuit breakers statistics.

• cluster: set a default of 1s for option.

• config: removed support for the v1 API.

• config: added support for rate limiting discovery request calls.

• cors: added invalid/valid stats to filter.

• ……

完整內容請查閱更新日誌

原始碼下載：

• Source code(zip)

• Source code(tar.gz)