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Timeout expired. The timeout period elapsed prior to completion of the operation or the server is no

...uts or the connection pool size. You'll need to dive in and figure out the root cause. If you need help resolving that root cause you can post your own question. – Marnix van Valen Jul 28 '14 at 6:36 ...
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Import module from subfolder

...re. To properly use absolute imports in a package you should include the "root" packagename as well, e.g.: from dirFoo.dirFoo1.foo1 import Foo1 from dirFoo.dirFoo2.foo2 import Foo2 Or you can use relative imports: from .dirfoo1.foo1 import Foo1 from .dirfoo2.foo2 import Foo2 ...
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Why do we use arrays instead of other data structures?

...ss it, because I don't know where it is in memory. All I know is where the root (P1) is, so instead I have to start at P1, and follow each pointer to the desired node. This is a O(N) look up time (The look up cost increases as each element is added). It is much more expensive to get to P1000 compa...
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Django: How to manage development and production settings?

... MIDDLEWARE = [...] TEMPLATES = [{...}] ... STATIC_URL = '/static/' STATIC_ROOT = os.path.join(BASE_DIR, 'staticfiles') MEDIA_ROOT = os.path.join(BASE_DIR, '/path/') MEDIA_URL = '/path/' Open dev.py and include that stuff which is development specific for example: dev.py: DEBUG = True ALLOWED_HOST...
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Re-entrant locks in C#

...r code such that there is an object graph and you can acquire locks on the root of that object graph, then do so. This means you have one lock on that root object and therefore don't have to worry so much about the sequence in which you acquire/release locks. (One further note, your example isn't t...
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What is the purpose of the -nodes argument in openssl?

...: lock down private.key { add HTTP server to ssl-cert group } sudo chown root:ssl-cert private.key - change owner of private.key to root user, ssl-cert group sudo chmod 640 private.key - change access permissions of private.key to owner R/W, group R now, HTTP server should be able to start and re...
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How to generate .NET 4.0 classes from xsd?

... 2. Within “XML Schema Explorer” scroll all the way down to find the root/data node. Right click on root/data node and it will show “Generate Sample XML”. If it does not show, it means you are not on the data element node but you are on any of the data definition node. Copy your genera...
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git rebase without changing commit timestamps

...so work with: interactive rebase (rebase -i/rebase --interactive) for the root commit (git rebase --root) See "Change timestamps while rebasing git branch". (Original answer, June 2012) You could try, for a non-interactive rebase (see just above: with Git 2.29, Q4 2020, that will work with an int...
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[精华] VC中BSTR、Char和CString类型的转换 - C/C++ - 清泛网 - 专注C/C++及内核技术

...结构体或类的成员变量。如果必须使用,一定要认真考虑如何分配和释放。 5.下面介绍一种比较复杂的情况,利于对问题的深入理解。例如我们现在用到的ICF底层库就有很多类似下面的函数: void CTestDlg::GetString(BSTR* state) ...
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Why do you program in assembly? [closed]

...mpiler to figure out exactly what to optimize. Quake's fast inverse square root. Again, the routine doesn't have assembler in it, but you need to know something about architecture to do this kind of optimization. The authors know what operations are fast (multiply, shift) and which are slow (divid...