Insights
Engineering notes, infrastructure deep dives and practical guides from the Exotecho team.
The claim Businesses spend real money on redundant servers, replicated databases and multi-region backups, then protect the domain name that points at all of it with a shared passw...
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The claim Any call to a third-party service inside a request handler makes that service a hard dependency of your application. Sending mail synchronously means your order confirmat...
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The claim Caching a dynamic page for one second sounds pointless. It is the single highest-leverage configuration change available to a small site, because it converts an unbounded...
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The claim Nearly every IT support agreement in this market is written around response time. A one-hour response commitment is satisfied by an automated ticket acknowledgement. It o...
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The claim On a typical content or commerce site, images account for the majority of transferred bytes — usually 55% to 75% — and the fix is a build step you configure once, not a f...
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The claim If more than four conditions in your system are permitted to page a human at three in the morning, none of them will be taken seriously by March. Alert fatigue is not a d...
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The claim A migration that changes the shape of a table and the code that reads it in the same deploy cannot be rolled back. During the seconds or minutes when old and new applicat...
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The claim A fixed-price software contract does not remove your risk. It sells you the risk back at a markup and then charges you again, through change orders, every time you learn...
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The claim A published DMARC record with a policy of none protects nobody. It asks receiving mail servers to report on forged mail and then deliver it anyway. Most Canadian business...
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