1.4.10 Planner Hook: When It Fires, How to Use It
Everything from 1.4.1 through 1.4.9 happened inside a single function, standard_planner() . Building paths, costing them, searching for a join order…
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Deep Inside the COM: Hunting the COM Global Interface Table (GIT)
If you've worked with classic Windows COM for any decent amount of time, you've almost certainly run into this frustrating reality: an interface poi…
1.2.1 From SQL Text to Raw Parse Tree
A line like SELECT name FROM users WHERE id = 1 arrives at the backend. As we saw in 1.1.1, the backend is a child process forked by the postmaster…
1.1.3 Optimizable vs Utility
Inside the five-stage pipeline from 1.1.1, there is another fork right after the parser. PostgreSQL classifies every SQL command into one of two cam…
1.1.2 Simple vs Extended
The fork visible in 1.1.1 (simple query protocol on one side, extended on the other) is the subject of this section, one level deeper. 1.1.1 set the…
Internals: Go 1.24 Garbage Collector Updates and How They Reduce Latency for gRPC Services
For high-throughput gRPC services, Go's garbage collector was once the silent killer of p99 latency—until Go 1.24 slashed stop-the-world (STW) pause…