Time-series data can be compressed to reduce the amount of storage required, and increase the speed of some queries. This is a cornerstone feature of Timescale. When new data is added to your database, it is in the form of uncompressed rows. Timescale uses a built-in job scheduler to convert this data to the form of compressed columns. This occurs across chunks of Timescale hypertables.


Compression alters data on your disk, so always back up before you start.


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