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- Pre-fork 'processes.spare' application processes;
- fork more processes to keep 'processes.spare' idle processes;
- fork on-demand up to 'processes.max' count;
- scale down idle application processes above 'processes.spare' after
'processes.idle_timeout';
- number of concurrently started application processes also limited by
'processes.spare' (or 1, if spare is 0).
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New optional configuration parameter introduced: limits.reschedule_timeout.
Default value 1 second. In the case when request is written to the port
socket 'in advance', it is called 'pending'.
On every completed request, the head of pending request is checked against
reschedule timeout. If this request waiting for execution longer than
timeout, it is cancelled, new port selected for this request.
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Use counter helps to simplify logic around port and application free.
Port 'post' function introduced to simplify post execution of particular
function to original port engine's thread.
Write message queue is protected by mutex which makes port write operation
thread safe.
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The router process exited abnormally on reconfiguration if number
of worker threads had been decreased on the previous reconfiguration.
Besides the list of router engines should be updated only after a new
configuration joints have been prepared for all engines.
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Configuration and building example:
./configure
./configure python
./configure php
./configure go
make all
or
./configure
make nginext
./configure python
make python
./configure php
make php
./configure go
make go
Modules configuration options and building examples:
./configure python --module=python2 --config=python2.7-config
make python2
./configure php --module=php7 --config=php7.0-config
--lib-path=/usr/local/php7.0
make php7
./configure go --go=go1.6 --go-path=${HOME}/go1.6
make go1.6
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With specific timeout and buffer size settings.
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listening socket handlers to worker engines.
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worker engines.
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Application process start request DATA message from router to master.
Master notifies router via NEW_PORT message after worker process become ready.
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Controller: stub to send configuration from POST body "as is" to router.
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