Insights
Engineering notes, infrastructure deep dives and practical guides from the Exotecho team.
The claim Any operation that changes something and can be retried — a payment, an order, a message send — will eventually be retried after it already succeeded, because the network...
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The claim After an outage, the most tempting explanation is that someone made a mistake, and the most useless response is to make sure that person is more careful next time. People...
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The claim Zero-downtime deployment and instant rollback are frequently treated as advanced capabilities that require a container orchestrator and a platform team. For a single appl...
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The claim Most application bugs and a large share of security holes come from the same root cause: data that entered the system in a shape the code did not expect, and was trusted...
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The claim If the only complete copy of your customer relationships lives inside a platform you do not control — a social network's follower count, a marketplace's buyer list, an em...
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The claim Logs that live only on the machine that produced them are useless in exactly the situation you most need them: when that machine has failed. The disk fills, the host is t...
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The claim The default database connection pool in most application frameworks is set to a number someone picked because it looked reasonable, and it is almost always wrong in the s...
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The claim The shared admin account, whose password lives in a spreadsheet or a group chat and is known to everyone who has ever needed it, is the single most common serious securit...
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The claim Adding an index because a query is slow, without first reading the plan the database uses to run it, is guessing — and it frequently makes things worse, because every ind...
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