Upstream keepalive: keepalive_requests directive. The directive configures maximum number of requests allowed on a connection kept in the cache. Once a connection reaches the number of requests configured, it is no longer saved to the cache. The default is 100. Much like keepalive_requests for client connections, this is mostly a safeguard to make sure connections are closed periodically and the memory allocated from the connection pool is freed.

# Copyright (C) Nginx, Inc.


if [ $USE_THREADS = YES ]; then

    if [ "$NGX_PLATFORM" = win32 ]; then
        cat << END

$0: --with-threads is not supported on Windows

END
        exit 1
    fi

    have=NGX_THREADS . auto/have
    CORE_DEPS="$CORE_DEPS $THREAD_POOL_DEPS"
    CORE_SRCS="$CORE_SRCS $THREAD_POOL_SRCS"
    CORE_LIBS="$CORE_LIBS -lpthread"
    NGX_LIBPTHREAD="-lpthread"
fi