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Yassin Kortam
a992ed18df
High-volume deployments see LiteLLM_SpendLogs grow unbounded because retention via DELETE leaves dead tuples that autovacuum cannot reclaim fast enough. With a range-partitioned table, retention drops whole partitions instead: an instant metadata operation that returns disk to the OS immediately. The feature is gated behind general_settings.use_spend_logs_partitioning (default false). With the flag off, the cleanup job never queries the catalog and behaves exactly as today. With it on, the job verifies the table is partitioned, pre-creates upcoming partitions, and drops expired ones; expired rows the drops cannot reach (DEFAULT partition, partitions spanning the cutoff) are still deleted row-wise so retention is never bypassed. If the table is not partitioned it falls back to batched DELETE only. Converting an existing table is a manual, documented operation in db_scripts/partition_spend_logs.sql; db_scripts/unpartition_spend_logs.sql rolls it back. Both scripts rename the old table's indexes aside before recreating them, since a table rename keeps the schema-unique index names and would otherwise silently skip the CREATE INDEX IF NOT EXISTS block. Granularity and pre-create lookahead are tunable via SPEND_LOG_PARTITION_INTERVAL (day/week/month, invalid values fall back to day) and SPEND_LOG_PARTITION_PRECREATE_AHEAD.