Glossary¶
- 302 content routing
- HTTP Content Routing.
- astats (stats_over_http)
- An ATS plugin that allows you to monitor vitals of the ATS server. See Cache Monitoring.
- cache
- A caching proxy server. See Caching Proxies.
- cachegroup
- A group of caches that together create a combined larger cache using consistent hashing. See Cache Group.
- consistent hashing
- See the Wikipedia article; Traffic Control uses consistent hashing when using HTTP Content Routing for the edge tier and when selecting parents in the mid tier.
- content routing
- Directing clients (or client systems) to a particular location or device in a location for optimal delivery of content See also HTTP Content Routing and DNS Content Routing.
- coverage zone map
- The coverage zone map (czm) or coverage zone file (zcf) is a file that maps network prefixes to cachegroups. See Localization.
- delivery service
- A grouping of content in the CDN, usually a determined by the URL hostname. See Delivery Service.
- edge (tier or cache)
- Closest to the client or end-user. The edge tier is the tier that serves the client, edge caches are caches in the edge tier. In a Traffic Control CDN the basic function of the edge cache is that of a Reverse Proxy. See also Cache Group.
- (traffic ops) extension
- Using extensions, Traffic Ops be extended to use proprietary checks or monitoring sources. See Traffic Ops Extension.
- forward proxy
- A proxy that works that acts like it is the client to the origin. See Forward Proxy.
- geo localization or geo routing
- Localizing clients to the nearest caches using a geo database like the one from Maxmind.
- health protocol
- The protocol to monitor the health of all the caches. See Health Protocol.
- localization
- Finding location on the network, or on planet earth. See Localization.
- mid (tier or cache)
- The tier above the edge tier. The mid tier does not directly serves the end-user and is used as an additional layer between the edge and the origin. In a Traffic Control CDN the basic function of the mid cache is that of a Forward Proxy. See also Cache Group.
- origin
- The source of content for the CDN. Usually a redundant HTTP/1.1 webserver.
- parent (cache or cachegroup)
- The (group of) cache(s) in the higher tier. See Cache Group.
- profile
- A group of settings (parameters) that will be applied to a server. See Profile.
- reverse proxy
- A proxy that acts like it is the origin to the client. See Reverse Proxy.