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Patroni is a widely used solution for managing PostgreSQL high availability. It provides a robust framework for automatic failover, cluster management, and operational simplicity in PostgreSQL environments.
https://www.cybertec-postgresql.com/en/patroni-cascading-replication-with-stanby-cluster/
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Schemas in PostgreSQL and Oracle: what is the difference?
https://www.cybertec-postgresql.com/en/schema-postgresql-oracle-difference/
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CREATE TABLE orders (
order_id SERIAL PRIMARY KEY,
customer_id INTEGER,
order_date DATE,
order_total NUMERIC
) PARTITION BY RANGE (order_date);
CREATE TABLE orders_y2023 PARTITION OF orders
FOR VALUES FROM ('2023-01-01') TO ('2024-01-01');
CREATE TABLE orders_y2024 PARTITION OF orders
FOR VALUES FROM ('2024-01-01') TO ('2025-01-01');
-- Add an index to each partition
CREATE INDEX idx_orders_y2023_customer_id ON orders_y2023 (customer_id);
CREATE INDEX idx_orders_y2024_customer_id ON orders_y2024 (customer_id);
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Beyond indexing, several query optimization techniques can significantly improve performance.
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Unused Indexes: Identify and remove unused indexes to reduce write overhead. The
pg_stat_all_indexes view provides information about index usage.2 028
Index Bloat: As data is inserted, updated, and deleted, indexes can become fragmented and bloated, leading to performance degradation. Rebuild indexes periodically using the
REINDEX command.2 028
Statistics: PostgreSQL relies on statistics to estimate the cost of different query plans. Inaccurate statistics can lead to suboptimal plan choices. Regularly update statistics using the
ANALYZE command.2 028
Partial indexes index only a subset of the table's rows, based on a condition. This can reduce index size and improve performance when queries frequently filter on that condition.
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Composite indexes index multiple columns. The order of columns in a composite index is important. The most frequently used column in
WHERE clauses should come first.