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PostgreSQL Training Index-only scans

PostgreSQL Training

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M1 — PostgreSQL Architecture and SQL Refresher

Process and memory model

WAL and checkpoints

DDL and data types

M2 — SQL Power Skills

Window functions

CTEs and recursive CTEs

JSONB and arrays

Full-text search

M3 — Indexes and Statistics

B-tree, GIN, GiST, BRIN

Partial and expression indexes

VACUUM, ANALYZE, planner stats

Index-only scans

M4 — Transactions, MVCC and Locking

Isolation levels and anomalies

Locks: row, page, advisory

Deadlocks and detection

M5 — Performance Tuning

EXPLAIN ANALYZE deep dive

pg_stat_statements

Connection pooling with PgBouncer

Memory and work_mem tuning

M6 — Partitioning and Sharding Patterns

Declarative partitioning

Partition pruning

Foreign tables and sharding

TimescaleDB extensions

M7 — Replication and High Availability

Streaming replication

Logical replication

Patroni and etcd

Failover and quorum

M8 — Backup, Restore and PITR

pgBackRest fundamentals

PITR configuration

Disaster recovery drills

Encryption and WORM

M9 — Operations and Observability

Monitoring with pgwatch / Prometheus

Alerting on replication lag

Maintenance windows

Upgrade patterns

M10 — Capstone and Certification Prep

Production HA cluster build

Performance case studies

PostgreSQL Certified Engineer mocks

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