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Create the perfect JPA entity [closed]
... now and each time I need to create entities I find myself struggling with issues as AccessType, immutable properties, equals/hashCode, ... .
So I decided to try and find out the general best practice for each issue and write this down for personal use.
I would not mind however for anyone to com...
Which Python memory profiler is recommended? [closed]
...or objects are consuming most memory.
Google search shows a commercial one is Python Memory Validator (Windows only).
8 A...
How does JavaScript handle AJAX responses in the background?
Since JavaScript runs in a single thread, after an AJAX request is made, what actually happens in the background? I would like to get a deeper insight into this, can anyone shed some light?
...
What is the difference between UNION and UNION ALL?
What is the difference between UNION and UNION ALL ?
26 Answers
26
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Why is Everyone Choosing JSON Over XML for jQuery? [closed]
I thought XML is highly portable and can be used as a mini database. I have seen XML used everywhere. I even see large companies switching over to JSON . Even Microsoft has integrated support for JSON. What is all the hype over JSON?
...
How to permanently set $PATH on Linux/Unix? [closed]
...pends on the purpose.
The variable values are usually stored in either a list of assignments or a shell script that is run at the start of the system or user session. In case of the shell script you must use a specific shell syntax and export or set commands.
System wide
/etc/environment List of...
How to study design patterns? [closed]
...
The best way is to begin coding with them. Design patterns are a great concept that are hard to apply from just reading about them. Take some sample implementations that you find online and build up around them.
A great resource is the...
How do I convert a String to an int in Java?
...yString);
If you look at the Java documentation you'll notice the "catch" is that this function can throw a NumberFormatException, which of course you have to handle:
int foo;
try {
foo = Integer.parseInt(myString);
}
catch (NumberFormatException e)
{
foo = 0;
}
(This treatment defaults a ma...
What is the difference between class and instance attributes?
Is there any meaningful distinction between:
5 Answers
5
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How to deploy an ASP.NET Application with zero downtime
...er 1
Deploy on Server 2
Test Server 2
Turn traffic on both servers
Thing is, even in this case you will still have application restarts and loss of sessions if you are using "sticky sessions". If you have database sessions or a state server, then everything should be fine.
...