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How to establish a connection pool in JDBC?
...onfigured and usable pooled DataSource
But if you are running inside an application server, I would recommend to use the built-in connection pool it provides. In that case, you'll need to configure it (refer to the documentation of your application server) and to retrieve a DataSource via JNDI:
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What are named pipes?
...tain the credentials of the thing on the other end etc).
Unix named pipes appear as a special file in the filesystem and can be accessed with normal file IO commands including the shell. Windows ones don't, and need to be opened with a special system call (after which they behave mostly like a norm...
Best Timer for using in a Windows service
...eb.UI.Timer and System.Windows.Forms.Timer, which are respectively for ASP applications and WinForms. Using those will cause the service to load an additional assembly which is not really needed for the type of application you are building.
Use System.Timers.Timer like the following example (also, ...
Maximum number of threads per process in Linux?
...p_count
echo 200000 > /proc/sys/kernel/pid_max
./100k-pthread-create-app
2018 update from @Thomas, on systemd systems:
/etc/systemd/logind.conf: UserTasksMax=100000
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GitHub Error Message - Permission denied (publickey)
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The upvote of using HTTPS instead of SSL is a bit disappointing. SSH is far more convenient. The suggestion from @MaximeBernard above solved the issue for me: GIT was not looking at the right place for the .ssh directory. Using ssh -vT git@github.com provides a lot of informati...
Where is JAVA_HOME on macOS Mojave (10.14) to Lion (10.7)?
...JAVA_HOME and doesn't actually change it. That's what the Java Preferences app is for, which in my case seems broken and doesn't actually change the JVM correctly. It does list the 1.7 JVM but I can toggle/untoggle & drag and drop all I want there without actually changing the output of /usr/lib...
Visual Studio popup: “the operation could not be completed”
...tructor of your custom controls even at design time, and weird things can happen (at design time some properties dont works, your connection string probably isn't populated...)
As a last resort...
Try to install any VS update
Try to disable VS extensions (if you installed any...)
Try to update...
Is there a way to list pip dependencies/requirements?
...3
├── idna<2.7,>=2.5 Internationalized Domain Names in Applications (IDNA)
└── urllib3<1.23,>=1.21.1 HTTP library with thread-safe connection pooling, file post, and more.
A more complex tree:
$ johnnydep ipython
name summary
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Escape a string for a sed replace pattern
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Because this applies only to substitute, this should be saying: The s command (as in substitute) of sed allows you to use other characters instead of / as a separator. Also, this would be an answer to how to use sed on URL with slash char...
Unique BooleanField value in Django?
... say that, don't ever trust save or clean methods if you are running a web application which you might take a few of requests to an endpoint at very same moment. You still must implement a safer way maybe on database level.
– u.unver34
Dec 30 '18 at 15:09
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