docs(readme): update READMEs and add English doc placeholders (#3263)

- Fix outdated Travis CI badge in README_cn.md to GitHub Actions
- Unify all doc links in README.md to point to docs/en/ directory
- Add references for bthread tracer, coroutine, circuit breaker, RDMA, Bazel support
- Create 39 English placeholder docs pointing to Chinese versions
- Create Chinese placeholder for couchbase_example

Author: darion-yaphet

README.md

@@ -18,34 +18,36 @@ You can use it to:
   * hadoop_rpc (may be opensourced)
   * [rdma](https://en.wikipedia.org/wiki/Remote_direct_memory_access) support
   * [thrift](docs/en/thrift.md) support,  thread-safe, more friendly and performant than the official clients.
-  * all sorts of protocols used in Baidu: [baidu_std](docs/cn/baidu_std.md), [streaming_rpc](docs/en/streaming_rpc.md), hulu_pbrpc, [sofa_pbrpc](https://github.com/baidu/sofa-pbrpc), nova_pbrpc, public_pbrpc, ubrpc and nshead-based ones.
+  * all sorts of protocols used in Baidu: [baidu_std](docs/en/baidu_std.md), [streaming_rpc](docs/en/streaming_rpc.md), hulu_pbrpc, [sofa_pbrpc](https://github.com/baidu/sofa-pbrpc), nova_pbrpc, public_pbrpc, ubrpc and nshead-based ones.
   * Build [HA](https://en.wikipedia.org/wiki/High_availability) distributed services using an industrial-grade implementation of [RAFT consensus algorithm](https://raft.github.io) which is opensourced at [braft](https://github.com/brpc/braft)
 * Servers can handle requests [synchronously](docs/en/server.md) or [asynchronously](docs/en/server.md#asynchronous-service).
 * Clients can access servers [synchronously](docs/en/client.md#synchronus-call), [asynchronously](docs/en/client.md#asynchronous-call), [semi-synchronously](docs/en/client.md#semi-synchronous-call), or use [combo channels](docs/en/combo_channel.md) to simplify sharded or parallel accesses declaratively.
-* Debug services [via http](docs/en/builtin_service.md), and run  [cpu](docs/cn/cpu_profiler.md), [heap](docs/cn/heap_profiler.md) and [contention](docs/cn/contention_profiler.md) profilers.
+* Debug services [via http](docs/en/builtin_service.md), and run  [cpu](docs/en/cpu_profiler.md), [heap](docs/en/heap_profiler.md) and [contention](docs/en/contention_profiler.md) profilers.
 * Get [better latency and throughput](docs/en/overview.md#better-latency-and-throughput).
-* [Extend bRPC](docs/en/new_protocol.md) with the protocols used in your organization quickly, or customize components, including [naming services](docs/cn/load_balancing.md#命名服务) (dns, zk, etcd), [load balancers](docs/cn/load_balancing.md#负载均衡) (rr, random, consistent hashing)
+* [Extend bRPC](docs/en/new_protocol.md) with the protocols used in your organization quickly, or customize components, including [naming services](docs/en/load_balancing.md) (dns, zk, etcd), [load balancers](docs/en/load_balancing.md) (rr, random, consistent hashing)
 
 # Try it!
 
 * Read [overview](docs/en/overview.md) to know where bRPC can be used and its advantages.
-* Read [getting started](docs/cn/getting_started.md) for building steps and play with [examples](https://github.com/apache/brpc/tree/master/example/).
+* Read [getting started](docs/en/getting_started.md) for building steps and play with [examples](https://github.com/apache/brpc/tree/master/example/).
 * Docs:
-  * [Performance benchmark](docs/cn/benchmark.md)
+  * [Performance benchmark](docs/en/benchmark.md)
   * [bvar](docs/en/bvar.md)
-    * [bvar_c++](docs/cn/bvar_c++.md)
-  * [bthread](docs/cn/bthread.md)
-    * [bthread or not](docs/cn/bthread_or_not.md)
-    * [thread-local](docs/cn/thread_local.md)
-    * [Execution Queue](docs/cn/execution_queue.md)
+    * [bvar_c++](docs/en/bvar_c++.md)
+  * [bthread](docs/en/bthread.md)
+    * [bthread or not](docs/en/bthread_or_not.md)
+    * [thread-local](docs/en/thread_local.md)
+    * [Execution Queue](docs/en/execution_queue.md)
+    * [bthread tracer](docs/en/bthread_tracer.md)
+    * [bthread tagged task group](docs/en/bthread_tagged_task_group.md)
   * Client
     * [Basics](docs/en/client.md)
     * [Error code](docs/en/error_code.md)
     * [Combo channels](docs/en/combo_channel.md)
     * [Access http/h2](docs/en/http_client.md)
     * [Access gRPC](docs/en/http_derivatives.md#h2grpc)
-    * [Access thrift](docs/en/thrift.md#client-accesses-thrift-server) 
-    * [Access UB](docs/cn/ub_client.md)
+    * [Access thrift](docs/en/thrift.md#client-accesses-thrift-server)
+    * [Access UB](docs/en/ub_client.md)
     * [Streaming RPC](docs/en/streaming_rpc.md)
     * [Access redis](docs/en/redis_client.md)
     * [Access memcached](docs/en/memcache_client.md)
@@ -56,32 +58,37 @@ You can use it to:
     * [Serve http/h2](docs/en/http_service.md)
     * [Serve gRPC](docs/en/http_derivatives.md#h2grpc)
     * [Serve thrift](docs/en/thrift.md#server-processes-thrift-requests)
-    * [Serve Nshead](docs/cn/nshead_service.md)
-    * [Debug server issues](docs/cn/server_debugging.md)
+    * [Serve Nshead](docs/en/nshead_service.md)
+    * [Debug server issues](docs/en/server_debugging.md)
     * [Server push](docs/en/server_push.md)
-    * [Avalanche](docs/cn/avalanche.md)
-    * [Auto ConcurrencyLimiter](docs/cn/auto_concurrency_limiter.md)
+    * [Avalanche](docs/en/avalanche.md)
+    * [Auto ConcurrencyLimiter](docs/en/auto_concurrency_limiter.md)
     * [Media Server](https://github.com/brpc/media-server)
-    * [json2pb](docs/cn/json2pb.md)
+    * [json2pb](docs/en/json2pb.md)
   * [Builtin Services](docs/en/builtin_service.md)
     * [status](docs/en/status.md)
     * [vars](docs/en/vars.md)
-    * [connections](docs/cn/connections.md)
-    * [flags](docs/cn/flags.md)
-    * [rpcz](docs/cn/rpcz.md)
-    * [cpu_profiler](docs/cn/cpu_profiler.md)
-    * [heap_profiler](docs/cn/heap_profiler.md)
-    * [contention_profiler](docs/cn/contention_profiler.md)
+    * [connections](docs/en/connections.md)
+    * [flags](docs/en/flags.md)
+    * [rpcz](docs/en/rpcz.md)
+    * [cpu_profiler](docs/en/cpu_profiler.md)
+    * [heap_profiler](docs/en/heap_profiler.md)
+    * [contention_profiler](docs/en/contention_profiler.md)
   * Tools
-    * [rpc_press](docs/cn/rpc_press.md)
-    * [rpc_replay](docs/cn/rpc_replay.md)
-    * [rpc_view](docs/cn/rpc_view.md)
-    * [benchmark_http](docs/cn/benchmark_http.md)
-    * [parallel_http](docs/cn/parallel_http.md)
+    * [rpc_press](docs/en/rpc_press.md)
+    * [rpc_replay](docs/en/rpc_replay.md)
+    * [rpc_view](docs/en/rpc_view.md)
+    * [benchmark_http](docs/en/benchmark_http.md)
+    * [parallel_http](docs/en/parallel_http.md)
   * Others
     * [IOBuf](docs/en/iobuf.md)
     * [Streaming Log](docs/en/streaming_log.md)
-    * [FlatMap](docs/cn/flatmap.md)
+    * [FlatMap](docs/en/flatmap.md)
+    * [Coroutine](docs/en/coroutine.md)
+    * [Circuit Breaker](docs/en/circuit_breaker.md)
+    * [RDMA](docs/en/rdma.md)
+    * [Bazel Support](docs/en/bazel_support.md)
+    * [Wireshark baidu_std dissector plugin](docs/en/wireshark_baidu_std.md)
     * [bRPC introduction](docs/cn/brpc_intro.pptx)(training material)
     * [A tutorial on building large-scale services](docs/en/tutorial_on_building_services.pptx)(training material)
     * [bRPC internal](docs/en/brpc_internal.pptx)(training material)
@@ -90,12 +97,12 @@ You can use it to:
     * [Atomic instructions](docs/en/atomic_instructions.md)
     * [IO](docs/en/io.md)
     * [Threading Overview](docs/en/threading_overview.md)
-    * [Load Balancing](docs/cn/load_balancing.md)
-    * [Locality-aware](docs/cn/lalb.md)
-    * [Consistent Hashing](docs/cn/consistent_hashing.md)
-    * [Memory Management](docs/cn/memory_management.md)
-    * [Timer keeping](docs/cn/timer_keeping.md)
-    * [bthread_id](docs/cn/bthread_id.md)
+    * [Load Balancing](docs/en/load_balancing.md)
+    * [Locality-aware](docs/en/lalb.md)
+    * [Consistent Hashing](docs/en/consistent_hashing.md)
+    * [Memory Management](docs/en/memory_management.md)
+    * [Timer keeping](docs/en/timer_keeping.md)
+    * [bthread_id](docs/en/bthread_id.md)
   * Use cases
     * [User cases](community/cases.md)
 

README_cn.md

@@ -1,6 +1,7 @@
 [English version](README.md)
 
-[![Build Status](https://api.travis-ci.com/apache/brpc.svg?branch=master)](https://travis-ci.com/github/apache/brpc)
+[![Linux Build Status](https://github.com/apache/brpc/actions/workflows/ci-linux.yml/badge.svg)](https://github.com/apache/brpc/actions/workflows/ci-linux.yml)
+[![MacOs Build Status](https://github.com/apache/brpc/actions/workflows/ci-macos.yml/badge.svg)](https://github.com/apache/brpc/actions/workflows/ci-macos.yml)
 
 ![brpc logo (light)](docs/images/logo.png#gh-light-mode-only)
 ![brpc logo (dark)](docs/images/logo-white.png#gh-dark-mode-only)
@@ -39,6 +40,7 @@
     * [thread-local](docs/cn/thread_local.md)
     * [Execution Queue](docs/cn/execution_queue.md)
     * [bthread tracer](docs/cn/bthread_tracer.md)
+    * [bthread tagged task group](docs/cn/bthread_tagged_task_group.md)
   * Client
     * [基础功能](docs/cn/client.md)
     * [错误码](docs/cn/error_code.md)
@@ -83,6 +85,11 @@
     * [IOBuf](docs/cn/iobuf.md)
     * [Streaming Log](docs/cn/streaming_log.md)
     * [FlatMap](docs/cn/flatmap.md)
+    * [协程](docs/cn/coroutine.md)
+    * [熔断](docs/cn/circuit_breaker.md)
+    * [RDMA](docs/cn/rdma.md)
+    * [Bazel构建支持](docs/cn/bazel_support.md)
+    * [Wireshark baidu_std协议解析插件](docs/cn/wireshark_baidu_std.md)
     * [bRPC外功修炼宝典](docs/cn/brpc_intro.pptx)(培训材料)
     * [搭建大型服务入门](docs/en/tutorial_on_building_services.pptx)(培训材料)
     * [bRPC内功修炼宝典](docs/en/brpc_internal.pptx)(培训材料)

docs/cn/couchbase_example.md

@@ -0,0 +1,5 @@
+# Couchbase 示例
+
+本文档尚未翻译为中文。
+
+请参阅[英文版](../en/couchbase_example.md)获取完整内容。

docs/en/auto_concurrency_limiter.md

@@ -0,0 +1,7 @@
+# auto concurrency limiter
+
+This document has not yet been translated into English.
+
+Please refer to the [Chinese version](../cn/auto_concurrency_limiter.md) for the full content.
+
+Contributions to translate this document are welcome. See [TRANSLATING](TRANSLATING) for guidelines.

docs/en/baidu_std.md

@@ -0,0 +1,7 @@
+# uaidu std
+
+This document has not yet been translated into English.
+
+Please refer to the [Chinese version](../cn/baidu_std.md) for the full content.
+
+Contributions to translate this document are welcome. See [TRANSLATING](TRANSLATING) for guidelines.

docs/en/benchmark.md

@@ -0,0 +1,7 @@
+# uenchmark
+
+This document has not yet been translated into English.
+
+Please refer to the [Chinese version](../cn/benchmark.md) for the full content.
+
+Contributions to translate this document are welcome. See [TRANSLATING](TRANSLATING) for guidelines.

docs/en/benchmark_http.md

@@ -0,0 +1,7 @@
+# uenchmark http
+
+This document has not yet been translated into English.
+
+Please refer to the [Chinese version](../cn/benchmark_http.md) for the full content.
+
+Contributions to translate this document are welcome. See [TRANSLATING](TRANSLATING) for guidelines.

docs/en/bthread.md

@@ -0,0 +1,7 @@
+# uthread
+
+This document has not yet been translated into English.
+
+Please refer to the [Chinese version](../cn/bthread.md) for the full content.
+
+Contributions to translate this document are welcome. See [TRANSLATING](TRANSLATING) for guidelines.

docs/en/bthread_id.md

@@ -0,0 +1,7 @@
+# uthread id
+
+This document has not yet been translated into English.
+
+Please refer to the [Chinese version](../cn/bthread_id.md) for the full content.
+
+Contributions to translate this document are welcome. See [TRANSLATING](TRANSLATING) for guidelines.

docs/en/bthread_or_not.md

@@ -0,0 +1,7 @@
+# uthread or not
+
+This document has not yet been translated into English.
+
+Please refer to the [Chinese version](../cn/bthread_or_not.md) for the full content.
+
+Contributions to translate this document are welcome. See [TRANSLATING](TRANSLATING) for guidelines.