How can I make SQLite faster?

Question

SQLite performance tuning Create indices, but with caution. Use the query planner to analyze your queries. Optimize queries that involve IS NOT. Improve write speed with the Write-Ahead-Log. Measure everything. Tune the cache size. Use REPLACE INTO to create or update a row.

Why is SQLite so slow?

The SQLite docs explains why this is so slow: Transaction speed is limited by disk drive speed because (by default) SQLite actually waits until the data really is safely stored on the disk surface before the transaction is complete. That way, if you suddenly lose power or if your OS crashes, your data is still safe.

How SQLite is fast?

SQLite 2.7. 6 is significantly faster (sometimes as much as 10 or 20 times faster) than the default PostgreSQL 7.1. ... SQLite works best if you group multiple operations together into a single transaction.

Is SQLite in memory fast?

sqlite or memory-sqlite is faster for the following tasks: select two columns from data (<. 1 millisecond for any data size for sqlite . ... sort by single column: pandas is always a bit slower, but this was the closest.

Is SQLite faster than file?

Reading and writing from an SQLite database is often faster than reading and writing individual files from disk. See 35% Faster Than The Filesystem and Internal Versus External BLOBs. The application only has to load the data it needs, rather than reading the entire file and holding a complete parse in memory.

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