Making non-concurrent helpers concurrent
Helper concurrency is a relatively new concept in Squid and is supported only within Squid versions 3.2 or later. However, there is a contributed script called helper-mux that can convert our old style non-concurrent helper programs into a concurrent helper, thus improving the overall helper performance by a significant amount.
The purpose of the helper-mux program is to share some of the load that Squid has to handle while dealing with relatively slower helper programs. The helper multiplexer program acts as a medium through which Squid and actual helper programs exchange messages. So, the helper multiplexer's interface with Squid is totally concurrent and while talking to the actual helper program, it ...
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