Varnish Cache
An HTTP caching reverse proxy and accelerator. Cookie, authentication and private-content rules need care to prevent cross-user data exposure.
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 12 / 685
Clear filtersvBulletin
Commercial forum and community software. Features, hosting and updates depend on the chosen product and licence terms.
Definition and sourcesVector graphics
Images represented by geometric objects and parameters, such as curves, allowing scaling without pixel-grid limitations. A vector file can still contain embedded raster images. “Vector” also has a separate mathematical meaning.
Definition and sourcesVersion control
Recording file-change history and collaborating on versions. It supports comparison and code recovery but does not replace whole-environment backups.
Definition and sourcesVersioning
Assigning identifiers to releases or changes under a defined policy. SemVer relates numbers to API compatibility, but not every project follows identical rules.
Definition and sourcesViewport
The visible document area in a browser. It need not equal physical screen resolution; zoom and on-screen keyboards can change available space.
Definition and sourcesVirtual DOM
An in-memory UI representation used to plan real DOM changes. It is an implementation technique, not an automatic performance guarantee.
Definition and sourcesVirtualisation
Creating logical environments on shared physical resources. Isolation and guaranteed resources depend on technology and configuration rather than the VPS label alone.
Definition and sourcesVolumetric attack
An attack overwhelming connectivity or infrastructure with traffic volume. Mitigation generally needs filtering upstream of the overloaded resource, not just application-server rules.
Definition and sourcesVPN (Virtual Private Network)
A virtual private network connecting devices or networks through other infrastructure. Common implementations encrypt traffic to the VPN endpoint. It provides neither complete anonymity nor phishing protection; tunnel scope and provider trust matter.
Definition and sourcesVPS (Virtual Private Server)
A virtual server with its own operating environment on shared physical infrastructure. Guaranteed resources depend on the offer. The label alone determines neither cost nor performance; administration, backups and monitoring also matter.
Definition and sourcesVue.js
A JavaScript framework for declarative component interfaces. It supports different project sizes; complete architecture still needs data and routing decisions.
Definition and sources