A practical guide to how databases work, covering schema design, SQL, indexing, transactions, concurrency, caching, pagination, and database selection.

"Find the best-selling product from last year." When an AI system attempts to answer a question like this by querying a company database, even a single reference to a nonexistent item can cause the ...

Dubbed PostGREShell, CVE-2026-6471 turns low-level replication access into code execution, permanent superuser privileges and a persistent database backdoor. PostgreSQL releases since 2014 contain a ...

PostgreSQL CASE statements make it possible to add conditional logic directly into SQL queries, working similarly to IF ELSE statements in programming languages and spreadsheet tools. This tutorial ...

Relational databases enforce schemas and ACID properties for data integrity, while non-relational databases offer flexible data models for unstructured content and rapid schema evolution at scale.

Complex Furnishings is a co-op horror-adventure game on Roblox by Real Mouse Productions. The premise is simple but unsettling: your furniture store has an infinite stockroom, and the stockroom ...

Gary Illyes from Google said Google Search will eventually support the new HTTP QUERY method. He said as the "ecosystem catches up" Google will then support the HTTP QUERY method. A QUERY requests ...

"Idempotent" may be jargon, but the term performs an important job in HTTP as a hall pass that gives reverse proxies and gateways the go-ahead to cache complex query responses and automatically retry ...

The pgpro_result_cache extension stores query results in shared memory for the database cluster. The cached data set is called the result cache. When the same query is executed again, PostgreSQL ...

Serverless PostgreSQL decouples compute and storage so each scales independently, eliminating manual provisioning and charging only for active usage rather than idle capacity. Cold start latency, ...