Technology, explained clearly. Find a term, choose a letter or narrow the topic. Definitions include sources and their review date.
An image represented by a pixel grid, such as a photograph. Pixel dimensions describe spatial detail; PPI relates those dimensions to print size. Enlargement usually involves interpolation and may reveal limited detail.
Definition and sourcesLimiting operations per time period for a key such as account or IP. It mitigates abuse but needs consideration of shared addresses.
Definition and sourcesA library for building interfaces from components. Complete applications also need routing, data-fetching and deployment decisions; React alone does not decide everything.
Definition and sourcesA URL clearly describing a resource with a predictable structure. It should be stable; renaming needs proper redirects rather than cosmetic shortening alone.
Definition and sourcesMarketing responding to current events and context. Publishing quickly should not replace verification of facts, tone and brand fit.
Definition and sourcesA PHP content management system with extensions. Choose add-ons and content modelling to fit the website and available support.
Definition and sourcesA data store using memory and structures including lists, sets and hashes. It can support caching and queues. Durability depends on configuration; Redis need not hold only temporary data.
Definition and sourcesChanging internal code structure without intended changes to observable behaviour. Tests help preserve contracts while improving readability and maintainability.
Definition and sourcesTraffic attributed to visits from another website under analytics rules. Missing referrer information and campaign configuration can affect classification.
Definition and sourcesChecking whether a change damaged previously working behaviour. Scope should follow risk and dependencies rather than test counts alone.
Definition and sourcesA URL resolved against a document's base address, such as ../contact. Its destination can change when the page or base element changes.
Definition and sourcesAdvertising to people who previously had a defined interaction. It requires appropriate data, consent and platform compliance rather than unrestricted tracking.
Definition and sourcesA historical acronym for using previous-audience lists in search advertising. Check Google Ads for current segment names and requirements.
Definition and sourcesCopying data changes between instances through a defined mechanism. Replicas can reproduce accidental deletions and therefore do not replace independent backups.
Definition and sourcesA location holding a project and version history, such as Git. Repository access and copies need protection, especially against publishing secrets.
Definition and sourcesGoogle Ads creatives assembled from supplied images, text and other assets. The platform adapts combinations to placements; all submitted assets need review.
Definition and sourcesAn architectural style with constraints including statelessness and a uniform interface. Using HTTP and JSON alone does not make an API RESTful.
Definition and sourcesAttributed revenue or conversion value divided by ad spend. It is not margin or profit and needs reliable values and attribution.
Definition and sourcesResolving an IP address to a name using PTR records. Address-space operators usually control it; matching reverse DNS alone does not authenticate email senders.
Definition and sourcesA server accepting client requests and forwarding them to backend services. It may handle TLS or caching and must protect trust headers and private content.
Definition and sourcesEnhanced search-result presentations with additional information. Valid structured data can establish eligibility, but display depends on search systems.
Definition and sourcesA file defining fetch rules for crawlers that follow them. It is not protection for private data. A blocked address can still appear in results; blocking does not replace authentication or noindex.
Definition and sourcesA local and remote file-synchronisation tool reducing unchanged transfers. Deletion options need care; synchronisation is not automatically a versioned backup.
Definition and sourcesRTO targets restoration time; RPO targets the tolerable data-loss point in time. These are design objectives requiring recovery-test validation.
Definition and sources