Programmer Group

Introduction: Dubbo is no stranger to you. It is a microservice development framework, which provides two key capabilities: RPC communication and microservice governance. In daily development, we use more RPC communication capabilities provided by Dubbo, but less service governance capabilities. This paper will focus on service governance. Dubb ...

Fully distributed cluster in installation mode 1. Introduction to fully distributed mode Fully distributed refers to using multiple machines to build a complete distributed file system in a real environment. In the real world, hdfs Related daemons in are also distributed in different machines, such as: -1. namenode As far as possible, the dae ...

Common generation strategies of distributed ID The common distributed ID generation strategies are as follows: Database autoincrement ID.UUID generation.Redis's atomic self increasing mode.Split the database horizontally, and set the initial value and the same self increasing step size.Self increment ID for batch application.Snowflake algorit ...

catalogue 1, Disadvantages of traditional log collection 2, ELK collection system process 3, Build ELK system 4, Code 5, Verification effect 1, Disadvantages of traditional log collection         We know that most of us use logs to judge where the program reports errors, so that we can take a powerful medicine aga ...

1, TiDB Binlog In the previous article, we introduced the use of TiDB Binlog to synchronize data to downstream Mysql. In this article, we learn to use TiDB Binlog tool to synchronize data to custom business logic in Kafka. For example, TIDB can synchronize data with ES, MongoDB or Redis. This function is not different from the binlog function ...

Question: I have encountered a requirement before. Assuming that there are multiple computing nodes and multiple GPU s on multiple computing nodes need to be used to deal with the same huge task, how to build such a cluster in the python environment? The first thought is to use MPI to carry out message transmission between parallel nodes, and ...

What is kafka? Apache Kafka is a distributed message queue based on publish / subscribe mode. It is an open source message system written by Scala. It is mainly used in the field of big data real-time processing and used to process streaming data. It is a very classic message engine and is famous for its high performance and high availability. ...

As mentioned earlier, the snowflake algorithm uses System.currentTimeMillis() to obtain time. There is a saying that System.currentTimeMillis() is slow because each call will deal with the system. In the case of high concurrency, a large number of concurrent system calls are easy to affect the performance (calling it is even more time-consuming ...

From common String commands to actual application scenario requirements design and development, this chapter enables you who are unfamiliar with redis to quickly master and understand, and you who are familiar with redis to quickly consolidate relevant knowledge 1, Characteristic description (1) String is the most basic type of Redis. A key c ...

1. Introduction Elasticsearch introduces the Cross Cluster Search (CCS Cross Cluster Search) function in version 5.3 to replace the cube node to be discarded. Similar to triple node, Cross Cluster Search is used to realize cross cluster data search. Cross Cluster Search enables you to run a single search request against one or more remote clus ...