Fetching a list and then a related record for each item individually turns one reasonable query into hundreds, and an…
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The default isolation level of most databases is not the strongest one, and choosing a level is choosing which concurrency…
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A client that receives an error with no indication of what went wrong or what to do about it is…
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The only way to know a backup actually works is to restore it, and a backup that has never been…
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Splitting a monolith into separate deployable services while leaving them all reading and writing the same database preserves every coupling…
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An index on a low-cardinality column often gets ignored by the query planner, and that is usually the correct decision…
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A load balancer does more than spread traffic — it is the mechanism for handling failures and for managing state,…
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A crash from a production build reports memory addresses, not function names, and without the matching debug symbols for that…
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A dependency that is struggling under load gets a flood of retries from every caller treating each failure as transient,…
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Adding an index per column is not an indexing strategy. Column order in composite indexes determines whether they get used…
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