fxjwind

摘要： 解决的问题： behavior parameterization，即可以把一段code，逻辑作为参数传入； 这样做的目的，当然为了代码抽象和重用，把变化的逻辑抽象出去； 在java中，如果要实现behavior parameterization，需要通过传入类对象的方式，你首先要声明很多类，verb 阅读全文

摘要： Copycat server之间的configure是如何，何时被同步的？ 大家可以看到，只有leader可以同步配置 1. 显式的调用LeaderState.configure LeaderState.configure /** * Commits the given configuration. */ protected CompletableFutu... 阅读全文

摘要： 对于Command，Configuration都要通过appendEntries的方式，把Entries同步给follower LeaderState.configure /** * Commits the given configuration. */ protected CompletableFuture configure(Collection members) { ... 阅读全文

摘要： Member.Status status的变迁是源于heartbeat heartbeat，append空的entries heartbeat的逻辑是会向所有的getRemoteMemberStates，发起heartbeat AVAILABLE 在初始化的时候，每个ServerMember默认是S 阅读全文

摘要： ConsumerRecords records = consumer.poll(100); /** * Fetch data for the topics or partitions specified using one of the subscribe/assign APIs. It is an error to not have * subscribed ... 阅读全文

摘要： client.submit(new PutCommand("foo", "Hello world!")); ServerContextconnection.handler(CommandRequest.class, request -> state.command(request)); State.command ReserveState开始，会把command forward到leade... 阅读全文

摘要： Server被拉起有两种方式， Address address = new Address("123.456.789.0", 5000); CopycatServer.Builder builder = CopycatServer.builder(address); builder.withStateMachine(MapStateMachine::new); 自己拉起一个cluster， ... 阅读全文

摘要： Copycat’s primary role is as a framework for building highly consistent, fault-tolerant replicated state machines. Copycat servers receive state machi 阅读全文

摘要： https://github.com/atomix/copycat http://atomix.io/copycat/docs/membership/ 为了便于实现，Copycat把member分成3种， active, passive, and reserve members — each of which play some role in supporting rapid ... 阅读全文

摘要： http://colobu.com/2016/02/29/Java-CompletableFuture/ http://www.deadcoderising.com/java8-writing-asynchronous-code-with-completablefuture/ https://www 阅读全文