Frequently used constants when constructing requests or responses. Many times the constant just refers to a string with the same contents. Using these constants gave about a 3% to 10% performance improvement over using the strings directly. Symbols did not really improve things much compared to constants.
The basic request body size we’ll try to read at once (16 kilobytes).
default TCP listen host address (0.0.0.0, all interfaces)
default TCP listen address and port (0.0.0.0:8080)
default TCP listen port (8080)
Maximum request body size before it is moved out of memory and into a temporary file for reading (112 kilobytes). This is the default value of of client_body_buffer_size.
The current version of Unicorn, currently 3.4.0
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