Elysiate blog
Practical guides for privacy-first developer tools, SEO and content operations, data and file workflows, cloud and API security, AI engineering, and sustainable freelance work. Everything here supports the same philosophy as our browser-based utilities: your data stays on your device until you choose otherwise.
For tabular data, the CSV tools hub covers validation and conversion in the browser, and the CSV topic index lists every CSV-tagged guide in one place.
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- PostgreSQL EXPLAIN ANALYZE Guide for Developers
A practical developer guide to PostgreSQL EXPLAIN ANALYZE, including how to read plans, compare estimates to actual rows, interpret buffers and timing, and diagnose real query performance problems.
- PostgreSQL CTEs vs Subqueries Performance Guide
A practical PostgreSQL guide to CTEs vs subqueries, covering MATERIALIZED, NOT MATERIALIZED, correlated subqueries, EXISTS, planner behavior, and how to choose the fastest shape for real queries.
- PostgreSQL CPU, Disk, and I/O Tuning Guide
A practical guide to PostgreSQL CPU, disk, and I/O tuning, including how to diagnose the real bottleneck, which settings matter most, and how to improve read/write behavior without guessing.
- PostgreSQL Covering Indexes and Index-Only Scans
A practical guide to PostgreSQL covering indexes and index-only scans, including INCLUDE columns, visibility-map behavior, index type support, and the query patterns where they actually pay off.
- PostgreSQL Connection Pooling with PgBouncer Guide
A practical guide to PostgreSQL connection pooling with PgBouncer, covering session vs transaction pooling, prepared statement behavior, sizing rules, pool settings, and common production mistakes.
- PostgreSQL Compound Indexes Explained
A practical guide to PostgreSQL compound indexes, including leftmost-column rules, sort order, skip scan, INCLUDE columns, and the query patterns where multicolumn indexes actually help.
- PostgreSQL Backup and Restore Best Practices
A practical guide to PostgreSQL backup and restore best practices, covering logical backups, physical backups, point-in-time recovery, backup verification, restore drills, and the mistakes that cause painful recoveries.
- PostgreSQL ANALYZE Command Explained
A practical guide to PostgreSQL ANALYZE, including what statistics it collects, why the planner needs them, when manual ANALYZE helps, and how to avoid stale-statistics performance problems.
- How to Use PostgreSQL Full-Text Search
A practical guide to using PostgreSQL full-text search, including tsvector, tsquery, GIN indexing, ranking, highlighting, and the patterns that work well in real applications.
- How to Secure PostgreSQL Connections and Roles
A practical guide to securing PostgreSQL connections and roles, including TLS, host-based authentication, SCRAM, least-privilege role design, public schema hardening, and safer production patterns.