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There are a few parameters that can be dialed down to reduce memory usage of bitcoind. This can be useful on embedded systems or small VPSes.

In-memory caches

The size of some in-memory caches can be reduced. As caches trade off memory usage for performance, usually reducing these have a negative effect on performance.

  • -dbcache=<n> - the UTXO database cache size, this defaults to 300 (100 before 0.13.0). The unit is MiB (1024)
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