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0e76b5fa05
A hypertable's tablespaces are now always retrieved from the tablespace metadata table instead of being cached with the hypertable. This avoids having to do cache invalidation when updating the tablespace table.
37 lines
2.3 KiB
SQL
37 lines
2.3 KiB
SQL
-- This file contains infrastructure for cache invalidation of TimescaleDB
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-- metadata caches kept in C. Please look at cache_invalidate.c for a
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-- description of how this works.
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CREATE TABLE IF NOT EXISTS _timescaledb_cache.cache_inval_hypertable();
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-- This is pretty subtle. We create this dummy cache_inval_extension table
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-- solely for the purpose of getting a relcache invalidation event when it is
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-- deleted on DROP extension. It has no related triggers. When the table is
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-- invalidated, all backends will be notified and will know that they must
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-- invalidate all cached information, including catalog table and index OIDs,
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-- etc.
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CREATE TABLE IF NOT EXISTS _timescaledb_cache.cache_inval_extension();
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-- not actually strictly needed but good for sanity as all tables should be dumped.
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SELECT pg_catalog.pg_extension_config_dump('_timescaledb_cache.cache_inval_hypertable', '');
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SELECT pg_catalog.pg_extension_config_dump('_timescaledb_cache.cache_inval_extension', '');
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DROP TRIGGER IF EXISTS "0_cache_inval" ON _timescaledb_catalog.hypertable;
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CREATE TRIGGER "0_cache_inval" AFTER INSERT OR UPDATE OR DELETE OR TRUNCATE ON _timescaledb_catalog.hypertable
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FOR EACH STATEMENT EXECUTE PROCEDURE _timescaledb_cache.invalidate_relcache_trigger();
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DROP TRIGGER IF EXISTS "0_cache_inval" ON _timescaledb_catalog.chunk;
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CREATE TRIGGER "0_cache_inval" AFTER INSERT OR UPDATE OR DELETE OR TRUNCATE ON _timescaledb_catalog.chunk
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FOR EACH STATEMENT EXECUTE PROCEDURE _timescaledb_cache.invalidate_relcache_trigger();
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DROP TRIGGER IF EXISTS "0_cache_inval" ON _timescaledb_catalog.chunk_constraint;
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CREATE TRIGGER "0_cache_inval" AFTER INSERT OR UPDATE OR DELETE OR TRUNCATE ON _timescaledb_catalog.chunk_constraint
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FOR EACH STATEMENT EXECUTE PROCEDURE _timescaledb_cache.invalidate_relcache_trigger();
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DROP TRIGGER IF EXISTS "0_cache_inval" ON _timescaledb_catalog.dimension_slice;
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CREATE TRIGGER "0_cache_inval" AFTER INSERT OR UPDATE OR DELETE OR TRUNCATE ON _timescaledb_catalog.dimension_slice
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FOR EACH STATEMENT EXECUTE PROCEDURE _timescaledb_cache.invalidate_relcache_trigger();
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DROP TRIGGER IF EXISTS "0_cache_inval" ON _timescaledb_catalog.dimension;
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CREATE TRIGGER "0_cache_inval" AFTER INSERT OR UPDATE OR DELETE OR TRUNCATE ON _timescaledb_catalog.dimension
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FOR EACH STATEMENT EXECUTE PROCEDURE _timescaledb_cache.invalidate_relcache_trigger();
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