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https://github.com/MeshCore-Beacon/beacon-server.git
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MrAlders0n
a84112f7fb
Refresh last_heard on duplicate observations too, capped at hourly, so steady traffic can't age a trace out of the filter (dedup key has no heard_at). Drop the unused last_heard index column so upserts stay HOT, and share one retention cutoff across the cleanup deletes.
24 lines
826 B
SQL
24 lines
826 B
SQL
-- Per-IATA trace activity so the trace filter stops joining every trace packet
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-- to observations (the hash join was overrunning /dev/shm).
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CREATE TABLE trace_iatas (
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trace_tag BYTEA NOT NULL,
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iata CHAR(3) NOT NULL REFERENCES iata_codes(iata) ON DELETE CASCADE,
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last_heard TIMESTAMPTZ NOT NULL DEFAULT NOW(),
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PRIMARY KEY (trace_tag, iata)
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);
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CREATE INDEX idx_trace_iatas_iata ON trace_iatas(iata);
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-- Seed from retained packets; parallelism off so the join spills to disk, not /dev/shm.
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SET max_parallel_workers_per_gather = 0;
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INSERT INTO trace_iatas (trace_tag, iata, last_heard)
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SELECT p.trace_tag, po.iata, MAX(po.heard_at)
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FROM packets p
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JOIN packet_observations po ON po.packet_hash = p.packet_hash
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WHERE p.trace_tag IS NOT NULL
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GROUP BY p.trace_tag, po.iata;
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RESET max_parallel_workers_per_gather;
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