Upgrading to this version from <= v2.1.1 will trigger a state rebuild. During this process (which can take up to 20 minutes), Horizon will not ingest new ledgers.
New features
- Introduces a flag (
--ro-database-url/RO_DATABASE_URL) which allows setting a connection to a read-replica database. This flag makes Horizon take into account data propagation lag to the replica instance, adding retries if the data is out of sync (3574).
Code changes
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Improved test suite coverage and stability (3560, 3562, 3551, and 3547).
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Improved session handling and timeouts (3576, 3545, and 3567).
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Improved stability of configuring Captive Core, intelligently merging parameters from the possible sources. Specifically, it will now prefer either the command-line parameter (e.g.
--captive-core-peer-portor its env-var equivalent) or the user-supplied append file (--captive-core-append-path) over Horizon's internal defaults. However, if a value is set in both the append file and at the command-line, an error will be thrown unless both values are equal (3558).