Connected: An Internet Encyclopedia
13.3.2 Entity Tag Cache Validators

Up: Connected: An Internet Encyclopedia
Up: Requests For Comments
Up: RFC 2068
Up: 13 Caching in HTTP
Up: 13.3 Validation Model
Prev: 13.3.1 Last-modified Dates
Next: 13.3.3 Weak and Strong Validators

13.3.2 Entity Tag Cache Validators

13.3.2 Entity Tag Cache Validators

The ETag entity-header field value, an entity tag, provides for an "opaque" cache validator. This may allow more reliable validation in situations where it is inconvenient to store modification dates, where the one-second resolution of HTTP date values is not sufficient, or where the origin server wishes to avoid certain paradoxes that may arise from the use of modification dates.

Entity Tags are described in section 3.11. The headers used with entity tags are described in sections 14.20, 14.25, 14.26 and 14.43.


Next: 13.3.3 Weak and Strong Validators

Connected: An Internet Encyclopedia
13.3.2 Entity Tag Cache Validators