Set a flag that marks a request as cacheable. This is a positive override only, setting flag to 0 restores the default behavior, it does not force the request to be uncacheable.

Set the cache key for the transaction txnp as the string pointed at by url of length characters. It need not be null terminated. This should be called from TS_HTTP_READ_REQUEST_HDR_HOOK which is before cache lookup but late enough that the HTTP request header is available.

A preprocessor macro which computes the maximum size of a fragment based on the value of big. This is computed as if the argument where the value of the big field in a struct Dir.

A preprocessor macro which computes the block size multiplier for a struct Dir where big is the big field value.