Cache
Storage of data for reuse, such as a saved HTTP response. Caching reduces delays and repeated work. Expiration and invalidation matter; private responses must not be indiscriminately stored in a shared cache.
Definition and sourcesKNOWLEDGE / FROM A TO Z
Glossary
Technology, explained clearly. Find a term, choose a letter or narrow the topic. Definitions include sources and their review date.
Terms 11 / 685
Clear filtersCache and microcache
Caches store responses or computation results for reuse. Microcaching uses short lifetimes; private and session-specific content needs exclusion from shared caches.
Definition and sourcesCDN (Content Delivery Network)
Distributed infrastructure delivering content from multiple locations. A CDN can cache assets and reduce origin-server load. Node selection depends on routing and configuration, not necessarily physical proximity.
Definition and sourcesChaos engineering
Controlled disruption experiments used to test system resilience. They require hypotheses, observation and bounded impact; randomly stopping services is insufficient.
Definition and sourcesCloud computing
A model for on-demand access to shared computing resources. Cloud changes infrastructure delivery but does not automatically transfer all application responsibility.
Definition and sourcesCloudflare
A network-services provider offering CDN, DNS, application protection and the Workers computing platform. Services operate differently. Enabling Cloudflare does not replace application updates or correct access configuration.
Definition and sourcesCluster
Cooperating nodes performing a shared task. A cluster can support scaling or availability but does not guarantee resilience to every failure.
Definition and sourcesCookies
Small pieces of data stored by a browser for a website, used for sessions, preferences, analytics or advertising. Cookies are not programs. Consent requirements depend on purpose and applicable rules.
Definition and sourcesCron
A system service executing commands according to a crontab schedule, for example backups. Time zones, permissions and overlapping runs need attention. Cron schedules execution; it does not guarantee the task succeeds.
Definition and sourcesCron job
A task executed on a schedule by cron. It needs a correct environment, permissions and error handling; scheduling does not guarantee success.
Definition and sourcesCrontab
A table or file of cron scheduling rules. It contains execution times and commands; field interpretation and timezone support depend on the implementation.
Definition and sources