Glossary

The words, without the shrug

Every term the courses use, defined in one line and then in a paragraph. Written to be read out of order.

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Showing 2 of 2 matching “TTL”

Exponential backoff

Infrastructure

Waiting longer between each retry.

Retrying after one second, then two, then four, with a little randomness added. Prevents everyone retrying in unison and turning a struggling service into a dead one.

See also Retry, Idempotency

TTL

Infrastructure

How long a cached copy stays valid.

Time to live: the expiry on a cached item. Simple to reason about, at the price of accepting staleness up to that duration.

See also Cache, Invalidation