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When should I use h:outputLink instead of h:commandLink?
...ick to h:outputLink or h:link for links. SEO should not be underestimated. By the way, for nice REST-like URL's like here on SO, have a look at PrettyFaces.
– BalusC
Nov 30 '10 at 20:02
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ab load testing
... than for 5 hours.
-k: This does the "KeepAlive" funcionality browsers do by nature. You don't need to pass a value for -k as it it "boolean" (meaning: it indicates that you desire for your test to use the Keep Alive header from HTTP and sustain the connection). Since browsers do this and you're li...
Meaning of acronym SSO in the context of std::string
...e is limited (typically a few MiB), whereas the free store is only limited by your system's memory.
SSO is the Short / Small String Optimization. A std::string typically stores the string as a pointer to the free store ("the heap"), which gives similar performance characteristics as if you were to ...
FixedThreadPool vs CachedThreadPool: the lesser of two evils
...utors.newCachedThreadPool and Executors.newFixedThreadPool are both backed by the same thread pool implementation (at least in the open JDK) just with different parameters. The differences just being their thread minimum, maximum, thread kill time, and queue type.
public static ExecutorService new...
How to encrypt String in Java
... been discovered, but 256 is as solid as it gets.
Fun fact DES was broken by the NSA back when it was initially founded and actually kept a secret for a few years. Although some people still claim 3DES is secure, there are quite a few research papers that have found and analyzed weaknesses in 3DES....
Check if a given Type is an Enum
....NET which should allow me to convert any enum's to a string value defined by a [Description] attribute.
3 Answers
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Refresh image with a new one at the same url
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Pros: 100% reliable, quick & easy to understand and implement.
Cons: Bypasses caching altogether, meaning unnecessary delays and bandwidth use whenever the image doesn't change between views. Will potentially fill browser cache (and any intermediate caches) with many, many copies of exactly th...
Is it possible to set the equivalent of a src attribute of an img tag in CSS?
...e.png);">
How it works:
The image is shrunk until no longer visible by the width & height.
Then, you need to 'reset' the image size with padding. This
one gives a 16x16 image. Of course you can use padding-left /
padding-top to make rectangular images.
Finally, the new image is put there...
Why doesn't Java Map extend Collection?
I was surprised by the fact that Map<?,?> is not a Collection<?> .
9 Answers
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Restarting cron after changing crontab file?
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Better option is reload - it can be initiated by non-root user: /etc/init.d/cron reload
– Honza
May 6 '14 at 4:50
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