In-memory Database Management System

An In-memory Database Management System is a DBMS that primarily relies on main memory for computer data storage.

• Example(s):
  • EXASolution DBMS.
• See: Harddisk-based DBMS, Cassandra DBMS.

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References

2013

• http://en.wikipedia.org/wiki/In-memory_database
  • An in-memory database (IMDB ; also main memory database system or MMDB or memory resident database) is a database management system that primarily relies on main memory for computer data storage. It is contrasted with database management systems that employ a disk storage mechanism. Main memory databases are faster than disk-optimized databases since the internal optimization algorithms are simpler and execute fewer CPU instructions. Accessing data in memory eliminates seek time when querying the data, which provides faster and more predictable performance than disk.

    In applications where response time is critical, such as telecommunications network equipment and mobile advertising networks, main memory databases are often used. IMDBs have gained a lot of traction, especially in the data analytics space, starting mid-2000s mainly due to cheaper RAM.

    With the introduction of NVDIMM technology, in-memory databases will now be able to run at full speed and maintain data in the event of power failure.

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