Edge Side Includes or ESI is a small markup language for edge level dynamic web content assembly. The purpose of ESI is to tackle the problem of web infrastructure scaling. It is an application of edge computing.
It is fairly common for websites to have generated content. It could be because of changing content like catalogs or forums, or because of personalization. This creates a problem for caching systems. To overcome this problem a group of companies (Akamai, Art Technology Group, BEA Systems, Circadence Corporation, Digital Island, Inc., Interwoven, Inc., Open Market, whose ESI-related technology is now owned by FatWire Software, Oracle Corporation and Vignette Corporation) developed the ESI specification and submitted it to the W3C for approval. The proposal editor was Mark Nottingham.
ESI Language Specification 1.0 was submitted to the World Wide Web Consortium (W3C) for approval in August 2001. The W3C has acknowledged receipt, but has not accepted the proposal.
ESI is implemented by some content delivery networks, such as Akamai, and by some caching proxy servers such as Varnish, Squid and Mongrel ESI, although many do not implement the complete specification. Akamai also adds additional features to the version they support.
Read more about Edge Side Includes: How ESI Is Implemented, Features, Alternatives
Famous quotes containing the words edge, side and/or includes:
“They call back to us
from the gauzy edge of paradise,
good news, good news.”
—Anne Sexton (1928–1974)
“I have often been downcast, but never in despair; I regard our hiding as a dangerous adventure, romantic and interesting at the same time. In my diary I treat all the privations as amusing. I have made up my mind now to lead a different life from other girls and, later on, different from ordinary housewives. My start has been so very full of interest, and that is the sole reason why I have to laugh at the humorous side of the most dangerous moments.”
—Anne Frank (1929–1945)
“The life of a wise man is most of all extemporaneous, for he lives out of an eternity which includes all time.”
—Henry David Thoreau (1817–1862)