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README
Apache-2.0

Build Status Coverage License Maven

项目名称

brpc-java 是 baidu rpc 的 java 版本实现,支持 baidu rpc、nshead、sofa、hulu、http、stargate、dubbo 等协议。

核心功能点

  • 支持 baidu rpc 标准协议、sofa 协议、hulu 协议、nshead+protobuf 协议、http+protobuf/json 协议、public pbrpc、stargate、dubbo协议。
  • 支持 Spring Boot Starter,也支持 Spring Cloud 的服务注册发现、用 brpc-java 替换 Feign HTTP 调用,提升性能。
  • 支持 Server Push 机制,并支持扩展 Server Push 协议。
  • 支持多种 naming 服务,比如 Zookeeper、Consul、List、File、DNS 等,可以灵活扩展支持 etcd、eureka、nacos 等。
  • 支持多种负载均衡策略,比如 fair、random、round robin、weight 等。
  • 支持 interceptor 功能,支持计数器、令牌桶等 server 端限流算法。
  • RPC 功能可独立使用,不是必须依赖 Spring 和注册中心功能。
  • 基于 SPI 机制可灵活扩展 Protocol、NamingService 和 LoadBalance。

快速开始

开发环境

java 6+ && protobuf 2.5.0+

引入 maven 依赖

protobuf 2.x 环境

非 Spring 环境:

<dependency>
    <groupId>com.baidu</groupId>
    <artifactId>brpc-java</artifactId>
    <version>3.0.1</version>
</dependency>

Spring 环境:

<dependency>
    <groupId>com.baidu</groupId>
    <artifactId>brpc-spring</artifactId>
    <version>3.0.1</version>
</dependency>

Spring Boot 环境:

<dependency>
    <groupId>com.baidu</groupId>
    <artifactId>brpc-spring-boot-starter</artifactId>
    <version>3.0.1</version>
</dependency>

Spring Cloud 环境:

<dependency>
    <groupId>com.baidu</groupId>
    <artifactId>spring-cloud-brpc</artifactId>
    <version>3.0.1</version>
</dependency>

Zookeeper 注册中心:

<dependency>
    <groupId>com.baidu</groupId>
    <artifactId>brpc-java-naming-zookeeper</artifactId>
    <version>3.0.1</version>
</dependency>

Consul 注册中心:

<dependency>
    <groupId>com.baidu</groupId>
    <artifactId>brpc-java-naming-consul</artifactId>
    <version>3.0.1</version>
</dependency>

protobuf 3.x 环境

除了引入 protobuf 2.x 环境所需依赖外,还需要增加 protobuf 3.x 依赖:

<dependency>
    <groupId>com.google.protobuf</groupId>
    <artifactId>protobuf-java</artifactId>
    <version>3.11.0</version>
</dependency>
<dependency>
    <groupId>com.google.protobuf</groupId>
    <artifactId>protobuf-java-util</artifactId>
    <version>3.11.0</version>
</dependency>

Server 端使用

Client 端使用

与 Spring 集成

扩展

一些设计

网络模型

采用 Netty 的 Reactor 网络模型,但跟常规用法有些不同:

  • 没有使用 Netty 的 ByteToMessageDecoder 去解析协议,因为 ByteToMessageDecoder 内部会对 buffer 进行拷贝。
  • 为了提高并发,尽量少在 IO 线程中执行业务逻辑,所以在 IO 线程中只会去解析协议的 Header 部分,并把 body 的 buffer retain 出来,然后丢给工作线程去处理;工作线程会 decode body,并执行具体业务逻辑。
  • 由于粘包/拆包问题,可能一次 socket 读操作会包含多个包,所以支持了批量往工作线程中 submit 任务。

零拷贝 Buffer

线程池 ThreadPool

  • 调研过 JDK 的 ThreadPoolExecutor、ConcurrentLinkedQueue 以及 Disruptor,最后使用更高性能的 ThreadPool
  • ThreadPool 内部把生产者队列、消费者队列分开,用两个锁去控制同步,当 consumer queue 为空时,且 producer queue 不为空条件满足时,会交换两个队列。

比ConcurrentHashMap 更快的 FastFutureStore

压力测试数据

部署环境:

  • Client/Server 机器配置:CPU 12核,内存 132G,千兆网卡。
  • 压测代码

压力测试结果:

数据量 5 byte 1k byte 2k byte 4k byte
QPS 220k 100k 53k 27k

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百度 brpc 的 Java 语言实现版本 展开 收起
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