Insights
Engineering notes, infrastructure deep dives and practical guides from the Exotecho team.
The claim The hardest part of caching is not storing a value; it is knowing when the stored value has become wrong. Teams reach for elaborate invalidation schemes — tracking every...
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The claim A single slow database query, left to run without a time limit, can bring down an entire application — not because the query itself is important, but because while it hol...
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The claim Before you commit your business's data to a software vendor, the question that matters most is not what the service does but how you get your data back out if you leave —...
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The claim The software your business runs is only as reliable as your ability to rebuild it from source, and most teams discover far too late that they cannot. The application depl...
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The claim A firewall configured to block a list of bad things and allow everything else is protecting you from yesterday's threats and nothing more, because the list can never be c...
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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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