What are the implementation methods of distributed database in PHP7.0?

PHP is a scripting language widely used in Web development. It has the advantages of easy to learn and use, high efficiency, and cross-platform. As the complexity of web applications continues to increase, higher requirements are also put forward for data storage and management. It is difficult for traditional single relational databases to meet these needs, so distributed databases have become the focus of developers. In PHP7.0, there are many ways to implement distributed databases, and we will introduce them one by one below.

1. Table splitting

Split table is a common distributed database implementation method. It splits a large table into several small tables. Each small table All store some data. In PHP7.0, sharding can be achieved through ShardingProxy. ShardingProxy is an open source database middleware that supports data distribution and load balancing based on sharding keys, and can horizontally split data into multiple databases. For applications, ShardingProxy is like a transparent database layer that can hide the complex details of the underlying database while providing high reliability and high performance data access services.

2. Sub-database

Similar to table sharding, sharding also splits a large database into multiple smaller databases. The difference is that table sharding divides a table horizontally according to a certain field, while database sharding divides data into different databases according to business needs. In PHP7.0, MySQL Fabric can be used to implement database sharding. MySQL Fabric is a database middleware officially provided by MySQL. It integrates routing, load balancing, fault tolerance, automatic failover and other functions, allowing applications to access multiple MySQL servers through a single interface. At the same time, MySQL Fabric also provides powerful API and command line tools so that developers can easily manage and monitor databases.

3. Master-slave replication

Master-slave replication is a common database replication technology, which copies data from one database server to another or multiple slave servers. . In PHP7.0, MySQL Replication can be used to implement master-slave replication. MySQL Replication is a database replication tool that can replicate all data and changes in a MySQL database, including table structures, data and indexes, etc. Through master-slave replication, functions such as read-write separation, data backup, and failover can be achieved.

4. Distributed transactions

Distributed transactions refer to transaction operations that span multiple databases, applications, or services. In PHP7.0, XA distributed transactions can be used to implement transaction operations across multiple databases. XA is a distributed transaction specification developed by the X/Open standards organization. It provides a set of standard APIs that can perform transaction operations across multiple databases. Developers can use the XA API to coordinate transactions across multiple databases to ensure the atomicity, consistency, and durability of transactions.

Summary

The above are the four ways to implement distributed databases in PHP7.0, namely sub-table, sub-database, master-slave replication and distributed transactions. These technologies can help developers solve data storage and management problems and improve application scalability, reliability and performance. When choosing an appropriate distributed database implementation, factors such as the size of the application, performance requirements, and database complexity should be considered.

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