英文:
Are GAE instances limited to 10 concurrent request?
问题
我从几个来源听说Google App Engine实例有一个硬限制，即10个并发请求。我想知道是否有人可以澄清这到底意味着什么。
调度程序是否会阻止超过10个请求，还是通过并发线程的限制来实施？
具体来说，这个限制是否会以与Python和Java相同的方式影响Go实例？
编辑：这是一个功能请求，允许App Engine实例处理超过10个并发请求/线程。请给它加星标。
英文:
I've heard from several sources that Google App Engine Instances have a hard limit of 10 concurrent request. I was wondering if someone could clarify what exactly this means.
Does the scheduler block any requests over the 10, or is this enforced through a limit on concurrent threads?
Specifically, does this limit affect Go instances the same way that it does Python and Java?
> EDIT: here's the feature request which will allow App Engine Instance to
> handle more then 10 concurrent request / threads. Allow configurable limit of
> concurrent requests per
> instance.
> Please star it.
答案1
得分: 8
截至2012年7月12日，是后者。10个并发限制是通过对每个运行时的并发线程进行限制来实施的。在大多数这样的情况下，我们的调度程序将尝试启动一个新实例。
请还参阅jonmac在此线程上的电子邮件：
https://groups.google.com/d/msg/google-appengine/y-LnZ2WYJ5Q/j_w13F4oSSkJ
英文:
As of July 12, 2012, it's the latter. The 10 concurrent limit is enforced through a limit on concurrent threads on every runtime. Most of such cases, our scheduler will try to spin up a new instance.
Please also see the e-mail from jonmac on this thread:
https://groups.google.com/d/msg/google-appengine/y-LnZ2WYJ5Q/j_w13F4oSSkJ
答案2
得分: 2
这个问题已经在2013年11月18日修复。
现在，任何GAE实例可以处理的最大请求数是通过max_concurrent_requests设置进行配置的，例如：
runtime: go
api_version: go1
automatic_scaling:
max_concurrent_requests: 80
handlers:
- url: /.*
script: _go_app
默认值是8，最大值是80。
更多信息请参见https://cloud.google.com/appengine/docs/python/config/appref#automatic_scaling。
英文:
This has been fixed as of Nov 18th 2013.
The maximum number of requests any GAE instance can process is now configured via the max_concurrent_requests setting eg:
runtime: go
api_version: go1
automatic_scaling:
max_concurrent_requests: 80
handlers:
- url: /.*
script: _go_app
The default is 8 and the maximum is 80.
See https://cloud.google.com/appengine/docs/python/config/appref#automatic_scaling for more info.
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