A connection pool is a queue you forgot to size
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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Insights & tutorials
Engineering notes, infrastructure deep dives and practical guides from the Exotecho team.
One shared login is one account nobody is accountable for
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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Read the query plan before you add another index
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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The estimate is wrong because the work is undiscovered
The claim When a software estimate turns out to be half of what the project actually cost, the usual explanation — padding was insufficient, the team was optimistic — misses the me...
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Renew your certificates by automation or not at all
The claim A TLS certificate that a human has to remember to renew will, eventually, expire on a weekend and take your site down — and the industry is actively removing the margin f...
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A cron job with no alert is a job you are not running
The claim A scheduled job that runs silently and is only noticed when it fails is not a reliable job — it is a job that has already failed silently at least once and nobody knew. C...
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Rate-limit at the edge before the request costs you anything
The claim The place to reject abusive traffic is the cheapest place in your stack to reject it, and that is the reverse proxy at the edge — before the request reaches your applicat...
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Cheaper is a rounding error next to unplanned downtime
The claim When a business chooses a hosting provider or a support vendor primarily on monthly price, it is optimising the smallest term in the equation. The cost that dominates the...
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Measure the p99, because the average hides your worst day
The claim An average response time is close to useless as a health metric, because it is dominated by the many fast requests and says nothing about the few slow ones — and the slow...
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