| Syntax: | variables_hash_max_size size |
| Default: | 512 |
| Context: | http |
| Reference: | variables_hash_max_size |
The maximum size of the variables hash table. For more detail see the description of tuning the hash tables in Nginx Optimizations.
The core module supports built-in variables, whose names correspond with the names of variables in Apache.
First of all, there are variables which represent header lines in the client request, for example, $http_user_agent, $http_cookie, and so forth. Note that because these correspond to what the client actually sends, they are not guaranteed to exist and their meaning is defined elsewhere (e.g. in relevant standards).
Furthermore, there are other variables: