Why We Should Have Different Databasesby@artemg
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Why We Should Have Different Databases

by Artem Gogin4mMay 13th, 2021
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There are only a few types of databases that can achieve mostly the same goals. In-memory databases can provide real-time response for selecting and inserting records. Document-oriented databases allow storing records in a document-oriented format. Columnar databases store data as key/value records on HDD or SSD. These solutions are designed to scale well enough to manage petabytes of data across thousands of commodity servers in a distributed system. They represent the SSTable architecture, designed for two use cases: fast access by key and fast writing.

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