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MongoDB Database Replication

MongoDB (from « humongous ») is an open-source document database, and the leading NoSQL database. Written in C++, MongoDB features:

  • Document-Oriented Storage »JSON-style documents with dynamic schemas offer simplicity and power.
  • Full Index Support »Index on any attribute, just like you’re used to.
  • Replication & High Availability »Mirror across LANs and WANs for scale and peace of mind.
  • Auto-Sharding »Scale horizontally without compromising functionality.
  • Querying »Rich, document-based queries.
  • Fast In-Place Updates »Atomic modifiers for contention-free performance.
  • Map/Reduce »Flexible aggregation and data processing.
  • GridFS »Store files of any size without complicating your stack.
  • MongoDB Management Service »Manage MongoDB on the cloud infrastructure of your choice.
  • MongoDB Enterprise »The best way to run MongoDB in production. Secured. Supported. Certified.
  • Production Support »Our experts at your fingertips. Get access to our global support organization 24×365

More information on : http://www.mongodb.org/

15/12/2014
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MySQL Database Replication

Replication is a basic technology for any database server because the downtime or the data loss can result in reducing accessibility, productivity and product confidence. Using data replication from a master server to one or more standbys decreases the possibility of any data loss. With MySQL Database replication, you can easily create a database cluster with one or more standby servers, which are ready to inherit and perform operations in case the master server fails.

More information on : http://docs.jelastic.com/database-master-slave-replication

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MariaDB Database Replication

Master-slave replication is used to solve a number of different problems with performance, supporting the backup of different databases, and as a part of a larger solution to alleviate system failures. It enables data from one database server (the master) to be replicated to one or more database servers (the slaves). The master logs the updates, which then ripple through to the slaves. The slave outputs a message stating that it has received the update successfully, thus allowing to send the subsequent updates. Master-slave replication can be either synchronous or asynchronous. The difference is simply the timing of propagation of changes. If the changes are made to the master and slave at the same time, it is synchronous. If changes are queued up and written later, it is asynchronous.

More information on : http://docs.jelastic.com/mariadb-master-slave-replication

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