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Scale PostgreSQL - partitioning, connection pooling, high availability
npx skill4agent add pluginagentmarketplace/custom-plugin-postgresql postgresql-scalingAtomic skill for horizontal and vertical scaling
parameters:
operation:
type: string
required: true
enum: [partition, pool, replicate, shard]
partition_type:
type: string
enum: [range, list, hash]CREATE TABLE events (id BIGINT, data JSONB, created_at TIMESTAMPTZ)
PARTITION BY RANGE (created_at);
CREATE TABLE events_2024_q1 PARTITION OF events
FOR VALUES FROM ('2024-01-01') TO ('2024-04-01');[pgbouncer]
pool_mode = transaction
default_pool_size = 20
max_client_conn = 1000CREATE ROLE replicator WITH REPLICATION LOGIN PASSWORD 'secret';
SELECT pg_create_physical_replication_slot('replica1');SELECT client_addr, pg_size_pretty(pg_wal_lsn_diff(sent_lsn, replay_lsn)) as lag
FROM pg_stat_replication;| Mode | Use Case |
|---|---|
| session | Long connections |
| transaction | Web apps (recommended) |
| statement | Simple queries |
| Problem | Cause | Solution |
|---|---|---|
| Partition not used | Pruning disabled | SET enable_partition_pruning = on |
| Too many connections | No pooler | Use PgBouncer |
| Replication lag | Slow replica | Check I/O, network |
Skill("postgresql-scaling")