Engines

mariadb supported engines

2015-11-18 KENNETH 0

출처 : https://mariadb.com/kb/en/mariadb/choosing-the-right-storage-engine/ 출처2 : https://mariadb.com/kb/en/mariadb/storage-engines/   MariaDB supported engines   The Archive storage engine is, unsurprisingly, best used for archiving. Aria, MariaDB’s more modern improvement on MyISAM, has a small footprint and allows for easy copy between systems. The BLACKHOLE storage engine accepts data but does not store it and always returns an empty result, useful, for example, if you want to run complex filtering rules on a slave without incurring any overhead on a master. Cassandra is a NoSQL engine. CONNECT allows access to different kinds of text files and remote resources as if they were regular MariaDB tables. The CSV storage engine can read and append to files stored in CSV (comma-separated-values) format. However, since MariaDB 10.0, CONNECT is a better storage engine is able to read and write such files. FederatedX uses libmysql to talk to the data [ more… ]

MySQL 5.7 Supported Storage Engines

2015-11-18 KENNETH 0

출처 : https://dev.mysql.com/doc/refman/5.7/en/storage-engines.html   MySQL 5.7 Supported Storage Engines InnoDB: The default storage engine in MySQL 5.7. InnoDB is a transaction-safe (ACID compliant) storage engine for MySQL that has commit, rollback, and crash-recovery capabilities to protect user data. InnoDB row-level locking (without escalation to coarser granularity locks) and Oracle-style consistent nonlocking reads increase multi-user concurrency and performance. InnoDB stores user data in clustered indexes to reduce I/O for common queries based on primary keys. To maintain data integrity, InnoDB also supports FOREIGN KEY referential-integrity constraints. For more information about InnoDB, see Chapter 14, The InnoDB Storage Engine. MyISAM: These tables have a small footprint. Table-level locking limits the performance in read/write workloads, so it is often used in read-only or read-mostly workloads in Web and data warehousing configurations. Memory: Stores all data in RAM, for fast access in environments that require [ more… ]