Databases
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PostgreSQL — access, pg_hba.conf, dump and restore
PostgreSQL is a relational DBMS: roles and databases, pg_hba.conf access rules, pg_dump dumps and pg_restore restores.
14 minsystemctl startpg_lsclusterspsql -h -
Redis — in-memory key-value store
Cache, queues, and sessions in RAM; KEYS * blocks the server on large databases — use --scan instead.
5 minredis-cli pingredis-cli inforedis-cli --bigkeys