HandlerDefault is an HTTP handler that responds to GET requests by displaying the list of metric IDs in HTML format.

HandlerGet is an HTTP handler that responds to GET requests by sending required metric.

HandlerPing is an HTTP handler that responds to GET requests with a simple "COOL!" message if the SQL storage's database is reachable.

HandlerUpdate is an HTTP handler that responds to POST requests by soring metric into the storage.

HandlerUpdateJSON is an HTTP handler that responds to POST requests by processing JSON-encoded metric data and storing it into the specified storage.

HandlerUpdatesJSON is an HTTP handler that responds to POST requests by processing JSON-encoded metric data and storing it into the specified storage.

HandlerValueJSON is an HTTP handler that responds to POST requests by sending required metrics.