If a successful response could not be obtained from any of the servers, the client will receive the result of the communication with the last server.
of simultaneous active connections to the proxied server (1.11.5). If the server group does not reside in the shared memory, the limitation works per each worker process. By default, the number of unsuccessful attempts is set to 1.
parameter sets the maximum number of idle keepalive connections to upstream servers that are preserved in the cache of each worker process.
When this number is exceeded, the least recently used connections are closed. The upstream connection is bound to the client connection once the client sends a request with the “Authorization” header field value starting with “”.
In the latter case client requests will be passed to another server.
Changing the file content directly should be avoided.
Specifies that a group should use a load balancing method where a request is passed to the server with the least average response time and least number of active connections, taking into account weights of servers.
If the A request that comes from a client not yet bound to a particular server is passed to the server selected by the configured balancing method.
and one request to each of the second and third servers.
If an error occurs during communication with a server, the request will be passed to the next server, and so on until all of the functioning servers will be tried.