void TSHttpTxnReqCacheableSet(TSHttpTxn txnp, int flag)¶
Set a flag that marks a request as cacheable. This is a positive override only, setting flag to
0restores the default behavior, it does not force the request to be uncacheable.
TSReturnCode TSCacheUrlSet(TSHttpTxn txnp, char const *url, int length)¶
Set the cache key for the transaction txnp as the string pointed at by url of length characters. It need not be NUL-terminated. This should be called from
TS_HTTP_READ_REQUEST_HDR_HOOKwhich is before cache lookup but late enough that the HTTP request header is available.
The APIs that modify the cache key can be called as early as
TS_HTTP_READ_REQUEST_HDR_HOOK but no later than
TS_HTTP_POST_REMAP_HOOK. The cache key is not only used for a cache lookup
before going to origin, but also to mark the intent to write to cache on an
origin response (if possible).
int DIR_SIZE_WITH_BLOCK(int big)¶
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