Overview of some popular distributed databases
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This document summarizes and compares several popular distributed database technologies: MySQL Cluster, MariaDB Galera Cluster, and Percona XtraDB Cluster. All three use synchronous multi-master replication and share-nothing architectures. MySQL Cluster has additional features like auto-sharding but lacks automatic node provisioning. Both MariaDB Galera Cluster and Percona XtraDB Cluster provide automatic node provisioning and support only SQL, while MySQL Cluster supports both SQL and NoSQL APIs. Performance tests show Galera generally outperforms NDB with fewer threads but NDB scales better as threads increase.
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Overview of some popular distributed databases
- 1. Travel through some popular Distributed Databases Sagar Chaturvedi
- 2. Agenda • MySQL cluster overview • MariaDB Galera cluster overview • Percona XtraDB cluster overview • Features Comparison • Performance Comparison
- 3. MySQL Cluster - Introduction • A technology providing clustering for MySQL database. • NDB(Network Database) engine combines with MySQL database. • Shared nothing architecture with no single point of failure. Type: RDBMS Documentation: http://dev.mysql.com/doc/refman/5.5/en/mysql-cluster.html License Type GPL (Community Edition) Last Release Date 12th March,2013(7.2.12) Release Frequency 1 month approximately Mailing List/Community support http://lists.mysql.com/cluster Major Applications/Users PayPal, Telenor, Alcatel Lucent,Big Fish, AT & T,US Navy Stability Stable version "7.2.12".
- 4. MySQL Cluster - Analysis Merits – • Auto Sharding • Replication (Synchronous and Asynchronous both) • Shared nothing architecture • SQL and NoSQL APIs(REST,HTTP, Java, C++, JavaScript etc) • GUI Manager available • Supports multiple platforms e.g. Windows, Linux, Solaris, Mac OS X Demerits – • No automatic node provisioning
- 5. MySQL Cluster - Architecture
- 6. MariaDB Galera Cluster - Introduction • A technology providing clustering for MariaDB database. • Galera library is combined with MariaDB database using replication APIs. • Synchronous multi-master cluster. Type: RDBMS Documentation: https://kb.askmonty.org/en/galera/ http://www.codership.com/wiki/doku.php License Type GPL Last Release Date 5th March,2013(5.5.29) Release Frequency 3 months approximately Mailing List/Community support https://lists.launchpad.net/maria-discuss/ Major Applications/Users Hybris, Drupal commerce, Typo 3,Asterisk VoiP Stability Stable version "5.5.29".
- 7. MariaDB Galera Cluster - Analysis Merits - • Synchronous replication • Multi-master topology : Each node can read and write on any other node • Read and write to any cluster node • Automatic node provisioning Demerits – • Available only for Linux. • Only SQL support. • No GUI manager
- 8. MariaDB Galera Cluster - Architecture
- 9. Percona XtraDB Cluster - Introduction • A high availability and high scalability solution for Percona/MySQL users. • Integrates Percona/MySQL Server with the Galera library. Type: RDBMS Documentation: http://www.percona.com/doc/percona-xtradb-cluster/index.html License Type GPL Last Release Date 17th April,2013(5.5.30-23.7.4) Release Frequency 2 months approximately Mailing List/Community support https://groups.google.com/forum/?fromgroups#!forum/percona-discussion Major Applications/Users Ask.com, BBC, cisco, StumbleUpon Stability Stable version "5.5.30-23.7.4".
- 10. Percona XtraDB Cluster - Analysis Merits - • Synchronous replication. Transaction either committed on all nodes or none. • Multi-master replication. You can write to any node. • Automatic node provisioning • No central management. You can loose any node at any point of time. Demerits – • Overhead of joining new node. The new node has to copy full dataset from one of existing nodes. • Available only for Linux. • Only SQL support. • No GUI manager
- 11. Percona XtraDB Cluster - Architecture
- 12. Features Comparison Software Name GUI manager Replication Automatic Node Provisioni ng Auto sharding( Auto Partitionin g of tables) APIs Platforms supported Multi Master Topolo gy Latency over WAN Backup Mechanis m Provided MySQL cluster Yes(Commer cial) Synchronou s/Asynchro nous No Yes SQL/No SQL Linux,Windows ,Mac OS X, Solaris No High yes MariaDB Galera Cluster No Synchronou s Yes No SQL Linux Yes Low yes Percona XtraDB cluster No Synchronou s Yes No SQL Linux Yes Low yes
- 13. Performance Comparison • MySQL cluster uses NDB engine while MariaDB Galera and Percona XtraDB cluster use Galera engine. So performance comparison is provided between NDB and Galera. • We will be analyzing performances in 2 different cases – When 2 Nodes are used When 4 Nodes are used
- 14. Performance Comparison – With 2 nodes • Performance of Galera is better than NDB. • Galera performance drops as number of threads increase. • NDB performance increases with no of threads.
- 15. Performance Comparison – With 4 nodes • Performance of Galera is better than NDB when threads are less. • Performance of NDB increases consistently as number of threads increase. • When no of threads are 512, performance of NDB is better than Galera as shown in the red circled areas of above diagrams.
- 16. Thank You!!!