db sharding

Law of large numbers and MySQL static sharding bitsCN.com Law of large numbers and static MySQL sharding Sharding has two advantages: static and dynamic sharding and static sharding. they are simple, low development costs, and low maintenance costs. Common static

Use the built-in table sharding algorithm of ThinkPHP to process millions of user data. Data Table: House_member_0 House_member_1 House_member_2 House_member_3 Model Class MemberModel extends AdvModel { Protected $ partition = array (field => username, type => id, num => 4 ); Public function getDao ($ data = array ()){ $ Data = empty ($ data )? $ _ POST: $ data; $ Table = $ this-> getPartitionTableName ($ data ); Return $ this-> table ($ table ); } }

also face the storage problem of massive data, it is necessary to adopt both the sub-table strategy and the sub-Library strategy, so as to expand the concurrent processing capability of the system and improve the query performance of the single table, which is called the sub-database sub-table.Common Sub-Library sub-table middleware1. Proxy sharding, currently modified by Cobar,mycat,drds,atlas, the origins of these products are generally mysqlproxy

Tags: Java back-end schema database middleware650) this.width=650; "src=" https://www.iocoder.cn/images/common/wechat_mp_2017_07_31.jpg "style=" border:2px Solid RGB (238,238,238); margin-top:0px; "/> Attention to the public number: "Taro Road source code" has benefits: Rocketmq/mycat/sharding-jdbc all Source analysis articles List ROCKETMQ/MYCAT/SHARDING-JDBC Chinese Note source GitHub address

time the Web server pressure is very large, the database server is relatively idle. After analysis, it is found that the number of concurrent users is too many, the single Web server can not support so many concurrent requests. As a result, the architecture assists with web multipoint deployment, and the front end uses Nginx for load distribution. One problem that must be addressed at this time is the problem of user session retention. There are several different solutions to this: 1, nginx imp

In this article, Oralce horizontal table sharding finds that tables are stored in each partition table by year based on the above horizontal table sharding. Since the data volume is still large by year after the business promotion. That In this article, Oralce horizontal table sharding finds that tables are stored in each partition table by year based on the abov

For example, query. If MYSQL is used for database/table sharding, the logic code is more difficult. For example, in a simple query, you need to find the table after dividing the table and then query it. In this way, the complexity of the Code will multiply .... How can we design and solve this problem ??????????... For example, query. If MYSQL is used for database/table sharding, the logic code is more diff

Skip the theoretical things and go to the web page to introduce automatic sharding. Insert million pieces of data into a database if the test is not sharded with million pieces of data. Quantity Skip the theoretical things and go to the web page to introduce automatic sharding. Insert million pieces of data into a database if the test is not sharded with million pieces of data. Quantity Skip the theo

Recently, the business system processes a large amount of data and requires table sharding. Because mybatis is used for persistence, the sharding plug-in can be used directly. The following is a demo. 1. Add Maven dependency to Pom. xml, 2. mybatis-config.xml configuration file configuration sharding plug-in "Com. Google. Code. shardbatis. plugin. shardplug

This article mainly introduces related information about how to use PHP to operate mysql database table sharding. For more information, see, when the data in our database exceeds million records, we should consider table sharding or partition. this time I will detail some table sharding methods. First, we need to think about the number of tables to be divided, pr

How to operate mysql database sharding using PHP, phpmysql Database Generally, when the data in our database exceeds million records, we should consider Table sharding or partition. This time I will discuss in detail some methods of table sharding. First, we need to think about the number of tables to be divided, provided that the application is satisfied. Here I

respective directories on each of the three machines above Unzip the mongodb.zip into the D:\mongodb Create the D:\mongodb\cluster\shard1 directory, under which you create the data, log subdirectory; To create a finished catalog listing: D:\mongodb\cluster\shard1\data D:\mongodb\cluster\shard1\log D:\mongodb\bin On 192.168.33.92, 192.168.33.93 and 192.168.33.94, create a config.conf text file under D:\mongodb\cluster\shard1, and put the following in the file, Note that indents can only be mad

What is ole db? Introduction to ole db, oledb Ole db (OLEDB) is a strategic low-level application interface for Microsoft to access different data sources. Ole db not only supports the Structured Query Language (SQL) of Open Database Connectivity (ODBC), but also supports other non-SQL data types.Introduction OLE stan

When mysql is used with a massive data volume of tens of millions, we will mostly consider Table sharding queries and database sharding queries. Next we will introduce the optimization of table sharding queries. When mysql is used with a massive data volume of tens of millions, we will mostly consider Table sharding qu

MongoDB cluster technology: replica set sharding, mongodb ClusterA MongoDB replica set is a process of synchronizing data to multiple servers. The replica set provides redundant backup of data and stores data copies on multiple servers, this improves data availability, ensures data security, and allows data recovery from hardware faults and service interruptions.Mongodb replication requires at least two nodes. One of them is the master node, which is

MongoDB replica setsAndAuto shardingThe simple configuration procedure is what we will introduce in this article. Many tutorials on the Internet have written replica sets and auto sharding (or sharding) together, which may be confusing for beginners, this is because a better auto sharding solution is to set each shard (shard) as a replica set ). A replica set i

In our actual work, we often encounter the separation of the worksheet by a certain header field. Our general practice is to first sort the worksheet by the specified header and then copy and paste it out in segments, it is not only troublesome but also easy to make mistakes. The following VBS script enables automatic table sharding for a worksheet Based on the specified table header (selected by the user. You only need to drag and drop the worksheet

MYSQL Performance Optimization-database/table sharding and non-stop modification of mysql table structure. For more information, see MYSQL Performance Optimization-database/table sharding and non-stop modification of mysql table structure. For more information, see 1. database/table sharding Obviously, the unlimited growth of a primary table (that is, a very