Simon Willison’s Weblog

REST, I just don’t get it. Read the comments for some excellent practical reasons to care about REST, including cache management (PUT and DELETE can expire the cache entries for the corresponding GET), the ability to add or move parts of the server API without redeploying client libraries and the idempotency of GET / PUT / DELETE and HEAD (repeated POST operations may have side-effects).

# 15th August 2008, 8:20 am / rest, damien-katz, post, get, put, delete, caching, idempotency

A Taxonomy of Event- and REST-based Comet. Kris Zyp describes a conceptual model for Comet messages based on REST semantics (so you can send a PUT referencing a specific URI down to a client to represent an idempotent state change).

# 21st November 2007, 8:18 pm / idempotent, put, http, rest, kriszyp, javascript, comet