How To Be A Slave Master

The senior research and development engineer of Jingdong Cloud Platform-Zhangchengyuan Redis is an open-source, Key/value caching system that adheres to the BSD License agreement and is renowned for its efficient response and rich data structures. The use of Redis in Jingdong is also very common, including the use of a lot of key business, because Redis official cluster has not been released, in the process of using redis need to face Redis single point of problem, Jingdong adopted a more general solution that is the master-slave backup plus the corresponding master-slave switching (in some scenarios may be read ...)

What we want to does in this tutorial, I'll describe the required tournaments for setting up a multi-node Hadoop cluster using the Hadoop Distributed File System (HDFS) on Ubuntu Linux. Are you looking f ...

MySQL master-slave synchronization is a very mature architecture, the advantages are: ① from the server can perform the query (that is, we often say reading function), reducing the pressure on the main server; ② in the backup from the main server to avoid the impact of the backup Main server service; ③ When the main server problems, you can switch to the server. So I often use this program in the deployment and implementation of the project; In view of the mysql production environment rigor, I recommend Zhang fellow MySQL source compiled here. The fourth edition updated as follows: First, an increase of ...

October 12 News, according to South Korean media games today reported that the Galalab operation of the web game "Wulin Heroes" because of its original slave system has been criticized.　　In the arena of the game, the failure of the PK side to become slaves, this is the focus of controversy.　　"Martial Arts Hero" in this game, the tournament winners can become slave owners, arbitrary rape and free trade slave system, triggering some of the players ' strong criticism. Opponents argue that "Masters gain experience by torturing slaves, and slaves trying to please their owners for experience, and some order words ..."

When we use a server to provide data services on the production line, I encounter two problems as follows: 1) One server does not perform enough to provide enough capacity to serve all network requests. 2) We are always afraid of this server downtime, resulting in service unavailable or data loss. So we had to expand our server, add more machines to share performance issues, and solve single point of failure problems. Often, we extend our data services in two ways: 1) Partitioning data: putting data in separate pieces ...

The traditional relational database has good performance and stability, at the same time, the historical test, many excellent database precipitation, such as MySQL. However, with the explosive growth of data volume and the increasing number of data types, many traditional relational database extensions have erupted. NoSQL database has emerged. However, different from the previous use of many NoSQL have their own limitations, which also led to the difficult entry. Here we share with you Shanghai Yan Technology and Technology Director Yan Lan Bowen - how to build efficient MongoDB cluster ...

In fact, see the official Hadoop document has been able to easily configure the distributed framework to run the environment, but since the write a little bit more, at the same time there are some details to note that the fact that these details will let people grope for half a day. Hadoop can run stand-alone, but also can configure the cluster run, single run will not need to say more, just follow the demo running instructions directly to execute the command. The main point here is to talk about the process of running the cluster configuration. Environment 7 ordinary machines, operating systems are Linux. Memory and CPU will not say, anyway had ...

This article shows how to setup an active-passive session-aware load balancing cluster (SLBC) consisting of two FortiGate-5000 chassis, four FortiController-5103Bs two in each chassis, and six FortiGate-5001Bs acting as workers, three in each chassis.

1. As with most other distributed systems, the Apache Mesos, in order to simplify the design, also employs a master/slave structure that, in order to solve the master single point of failure, makes master as lightweight as possible, and the above number It can be reconstructed through various slave, so it is easy to solve the single point of failure by zookeeper. (What is Apache Mesos?) Reference: "Unified resource management and scheduling platform (System) Introduction", this article analysis based on MES ...

1. Kyoto Buffer protocal Buffer is a library of Google Open source for data interchange, often used for cross-language data access, and the role is generally serialized/deserialized for objects. Another similar open source software is Facebook open source Thrift, their two biggest difference is that thrift provides the function of automatically generating RPC and protocal buffer needs to implement itself, but protocal buffer one advantage is its preface ...