DB Sync 13.7.0.3

DB Sync 13.7.0.3 supports node 10.7.1. It provides major performance improvements in speed and memory. It supports LSM (experimentally for now), which brings memory requirements down to ~6 GB.

For Linux, liburing, protobuf-compiler, and snappy-c are new dependencies.

Upgrading

Upgrading from older versions (13.6, 13.7) is possible with minor changes
to the database (see migration-2-0045-20250708.sql, migration-2-0046-20250223.sql, migration-2-0047-20260421.sql, migration-4-0009-20250223.sql).

The ledger snapshot format has changed and is now fully compatible with cardano-node. Upgrading requires a ledger replay from genesis. You will see log lines such as:

Migrating: removing <N> old .lstate snapshots

followed by a replay that takes a few hours.

Snapshots

The release is compatible with both 13.7 and 13.6 DB snapshots:

Changelog

https://github.com/IntersectMBO/cardano-db-sync/blob/13.7.0.3/CHANGELOG.md#13703

LSM (experimental)

• Enable by setting "ledger_backend": "lsm" in the db-sync config — see config docs.
• Snapshots can be converted between InMemory and LSM with snapshot-converter — see snapshot docs.
  The compatible snapshot-converter is shipped with node-10.7.1.
• --bootstrap-tx-out is not supported with LSM.

Notes

When running db-sync, enable only the data you actually need. This is
configured in the db-sync config file — see config docs.

Platforms

• Linux 64-bit
• Docker image
• Requires ghc-9.6.x to build

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