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  5. Christophe Pettus: All Your GUCs in a Row: random_page_cost and seq_page_cost
Christophe Pettus: All Your GUCs in a Row: random_page_cost and seq_page_cost
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Christophe Pettus: All Your GUCs in a Row: random_page_cost and seq_page_cost

The planner charges `random_page_cost` per index page based on how uncorrelated the index is—but the name lies. (I consult on PostgreSQL through PGX Inc..)

DatabasesPlanet PostgreSQLPublished: October 18, 2026
Databases
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DatabasesPlanet PostgreSQLOct 17, 2026Content in its original language: Portuguese

Christophe Pettus: All Your GUCs in a Row: quote_all_identifiers

Dumping across major versions? A reserved keyword can silently break constraints and policies. (I consult on PostgreSQL through PGX Inc..)

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DatabasesPercona Database BlogOct 16, 2026

“MongoDB was slow on Thursday”: answering the app team with mongo-health

Monday, 9:00. The app team writes: “MongoDB was slow on Thursday afternoon. What happened?” No alert fired, nobody looked at the time, and now it is your problem. The answer is usually in the FTDC. Every mongod writes a sample of its own…

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