mongodb storage engine

optimizerSQL statements use the query optimizer to optimize queries before they are queried. He uses the Select-drop-join strategy for querying.The user can also request the server to give a description of the optimization process, in order to learn the optimization strategy of the server, to provide users with a parameter benchmark, so that users can rewrite the query, schema and modify the relevant server configuration, easy to run MySQL more efficient.7) cache and buffer: Query CacheTo quer

First, the database storage engine IntroductionThe database storage engine is the database's underlying software component, and the database management system (DBMS) uses the database storage engine to create, query, update, and d

Tags: style blog class code java cBrief introduction Data in MySQL is stored in files (or memory) in a variety of different technologies; Each technology uses different storage mechanisms, indexing techniques, locking levels, and ultimately provides a wide range of capabilities and capabilities; These different techniques for implementing data storage are logically translated into the "

Label:MySQL, as an open source free database, is often used in regular projects, while our focus in the project is generally designed to use the database rather than MySQL itself, so when it comes to MySQL's storage engine, it is not generally known, This is a summary of the MySQL storage engine under the Web-related l

Tags: blog http io ar using SP on file data1. Insert BufferA.insert BufferIt makes sense to listen to a name. The insert buffer is part of the buffer pool. It's not like that. The InnoDB buffer pool has insert buffer information, but insert buffer is a part of the physical page as well as the data page. In the InnoDB storage engine, the insertion order of row Records is inserted in the order in which the pr

MySQL official storage engine more common storage engines are: Innodb, MyISAM, Memory, Archive, NDB, BDB, third-party more famous: Tokudb, Infobright, INNFINIDB, XtraDB (InnoDB enhanced version)The official storage engine features a comparison MySQL

Later saw the blog Park in the use of NorthScale Memcached Server (Official Site: http://www.couchbase.com/products-and-services/memcached), it seems to share the charges, and hesitated. In fact, the requirements in the project are very simple and you also want to use them on your own. net Cache, but the stability is difficult to assess, the development and maintenance costs seem too high, there is no way, My SQL Memory Storage becomes the only choice

Using the external health foreign keyForeign key (current table field name) References table name (field name in Table name) on UPDATE cascade on DELETE Cascade Engine=innodb;Foreign Health The current table refers to another table name. Synchronize Update series synchronously delete concatenation1. Table Storage Engine If the InnoDB

The storage engine for MySQL databaseThe storage engine is a unique feature of the MySQL database, and other databases do not have such functionality. The so-called storage engine is the way the database stores data at the bottom.

Tags: mongodb solr search engine ubuntu JSONEnvironment: Ubuntu 12.04 Solr 5.1.0 MongoDB db version:v2.0.4 1. SOLR Configuration and MongoDB installationSOLR installation configuration is now very simple, refer to the Official document: Http://lucene.apache.org/solr/quickstart.html, the official document is the clou