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Glossary·
Minsk · WarsawHire us
Caching
Storing the result of an expensive operation so the next request can be answered from memory instead of recomputing it. Caches live in the browser, on a CDN, in the application, and in front of the database.
Why it matters
Caching is usually the cheapest way to make a slow product fast: it cuts both response time and infrastructure cost. The difficulty is not speed but correctness — knowing when cached data must be thrown away.
How we approach it
We cache where measurements show a real bottleneck, define explicit invalidation rules for each cache, and never cache personalised data at a shared layer, which is a common source of data leaking between users.
