强一致  最终一致

Frequently Asked Questions - Consul by HashiCorp https://www.consul.io/docs/faq.html

Q: Is Consul eventually or strongly consistent?

Consul has two important subsystems, the service catalog and the gossip protocol. The service catalog stores all the nodes, service instances, health check data, ACLs, and KV information. It is strongly consistent, and replicated using the consensus protocol.

The gossip protocol is used to track which nodes are part of the cluster and to detect a node or agent failure. This information is eventually consistent by nature. When the servers detects a change in membership, or receive a health update, they update the service catalog appropriately.

Because of this split, the answer to the question is subtle. Almost all client APIs interact with the service catalog and are strongly consistent. Updates to the catalog may come via the gossip protocol which is eventually consistent, meaning the current state of the catalog can lag behind until the state is reconciled.

Q: Is Consul eventually or strongly consistent?的更多相关文章

  1. consul Consul vs. ZooKeeper, doozerd, etcd

    小结 1.Consul 功能更丰富: 2. 暴露http接口避免暴露系统复杂性 The Consul clients expose a simple HTTP interface and avoid ...

  2. 基于consul构建golang系统分布式服务发现机制

    原文地址-石匠的Blog: http://www.bugclosed.com/post/5 在分布式架构中,服务治理是一个重要的问题.在没有服务治理的分布式集群中,各个服务之间通过手工或者配置的方式进 ...

  3. [转]Amazon DynamoDB – a Fast and Scalable NoSQL Database Service Designed for Internet Scale Applications

    This article is from blog of Amazon CTO Werner Vogels. -------------------- Today is a very exciting ...

  4. Open-Source Service Discovery

    Service discovery is a key component of most distributed systems and service oriented architectures. ...

  5. Eureka

    Consul vs. Eureka Eureka is a service discovery tool. The architecture is primarily client/server, w ...

  6. HBase——强一致性详解

    Hbase是一个强一致性数据库,不是“最终一致性”数据库,官网给出的介绍: “Strongly consistent reads/writes: HBase is not an "event ...

  7. LIST OF NOSQL DATABASES [currently 150]

    http://nosql-database.org Core NoSQL Systems: [Mostly originated out of a Web 2.0 need] Wide Column ...

  8. 3_time

    3. Time and order What is order and why is it important? What do you mean "what is order"? ...

  9. aws 试题

    /* Domain 1 Design Resilient Architectures 1. Which of the following statements regarding S3 storage ...

随机推荐

  1. [转]你可能不知道的五个强大HTML5 API

    一.全屏 // 找到适合浏览器的全屏方法 function launchFullScreen(element) { if(element.requestFullScreen) { element.re ...

  2. 中期linux课程考试题

    [口头表达] 1)请描述你了解的磁盘分区的相关知识2)什么是rsync,你有什么生产环境的应用?3)在生产环境中,公司的IDC机房即将超过254台机器,请问你有什么解决方案来规划扩展IDC机房的内网网 ...

  3. __NSArrayI __NSArray0 __NSSingleObjectArrayI __NSPlaceholderArray __NSArrayM

    如果你的 全局 可变数组 前面  用了  copy修饰,那么 调用   arr addObjectsFromArray: 的时候 就 会崩溃,而且提示你  是  [__NSArray0 addObje ...

  4. Android 异常 android.os.NetworkOnMainThreadException

    近期在实现一个Android下的数据採集的SDK,收集用户使用数据使用HTTP发送到云平台.进行数据分析.但在发送数据时报例如以下错误: Caused by: android.os.NetworkOn ...

  5. mysql触发器详解 mysql触发器

    目录 21.1. CREATE TRIGGER语法 21.2. DROP TRIGGER语法 21.3. 使用触发程序 MySQL 5.1包含对触发程序的支持.触发程序是与表有关的命名数据库对象,当表 ...

  6. WCF-Oracel适配器针对UDT的使用配置与注意事项

    配置方法 1.针对Oracle UDT 的数据类型需要在开发过程中手动配置生成的DLL位置和Key位置,Visual Studio->添加生成项目->Add Adapter Metadat ...

  7. SQL Server 各种时间业务处理

    1.SQL 生成随机字符串作为流水号 ), ) --年月日时分秒 ), ),'-','') ), ),':','') --随机英文字符 ))),) ) --英文加数字 随机五位数字 )))) ))), ...

  8. docker的/var/lib/docker/overlay文件夹突然占满了硬盘

    场景描述 事情是这样的,前两天客户的服务器突然断电了,导致用docker部署的服务也挂了.昨天去现场,重启了docker,同时准备更新一下服务.结果发现有一台节点硬盘满了- 还是觉得有些奇怪的,毕竟d ...

  9. 基于jQuery扁平多颜色选项卡切换代码

    基于jQuery扁平多颜色选项卡切换代码,支持自动轮播切换,鼠标滑过切换的jQuery特效.效果图如下: 在线预览   源码下载 实现的代码. html代码: <div class=" ...

  10. 【GMT43智能液晶模块】例程十：DMA实验——存储器到存储器的传输

    实验原理: DMA(直接存储器访问)传输不需要占用CPU,可以在存储器至存储器实现高速的数据 传输.本实验采用DMA2控制器的数据流0,选用通道0进行数据传输.通过液晶控制传输 和结果显示. 示例截图 ...