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S3 Error: The difference between the request time and the current time is too large
...ou get a message saying the NTP socket is still in use, stop it with sudo /etc/init.d/ntp stop and re-run your command.
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How to import an existing X.509 certificate and private key in Java keystore to use in SSL?
... Root CA Certificate is obtained by Tomcat from the
# JDK's truststore in /etc/pki/java/cacerts
# The non-APR HTTPS connector (APR uses OpenSSL-like configuration, much
# easier than this) in server.xml looks like this
# (See: https://tomcat.apache.org/tomcat-6.0-doc/ssl-howto.html):
#
# <Conn...
What scalability problems have you encountered using a NoSQL data store? [closed]
...ap them to our Java object model, that's with everything correctly indexed etc.
Storing them as key/value pairs using a lightweight text representation: 1 table, 18,000 rows, 3 seconds to retrieve them all and reconstruct the Java objects.
In business terms: first option was not feasible. Second o...
Composer killed while updating
...on the live server.
composer install will then read from the .lock file, fetching the exact same versions every time rather than finding the latest versions of every package. This makes your app less likely to break, and composer uses less memory.
Read more here: https://getcomposer.org/doc/01-basi...
Null vs. False vs. 0 in PHP
...ting means it also failed the filter?)
Methods returning false/null/string/etc interchangeably is a hack when the author care about the type of failure, for example, with filter_input() you can check for ===false or ===null if you care why the validation failed. But if you don't it might be a pitfal...
Convert PDF to image with high resolution
...image. That's also the amount of pixels the sharpen, contrast, compression etc. settings work on.
– Daniel Schneller
Aug 2 '13 at 7:30
8
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Add a “hook” to all AJAX requests on a page
...ill generically intercept any AJAX globally and not screw up any callbacks etc. that maybe have been assigned by any third party AJAX libraries.
(function() {
var origOpen = XMLHttpRequest.prototype.open;
XMLHttpRequest.prototype.open = function() {
console.log('request started!');
...
What is the difference between DAO and Repository patterns?
...n go the old way of writing the query methods yourself (using Criteria API etc), but you'd just make your life a bit more complex ... You might say that you would have more flexibility like that, but that's not true either as if you really want to go crazy with your queries, Spring Data allows you t...
pip installing in global site-packages instead of virtualenv
...routine as you did, which piping over and over, following the stack trace, etc.
Make absolutely sure that
/Users/kristof/VirtualEnvs/testpy3/bin/pip3
is what you want, and not referring to another similarly-named test project (I had that problem, and have no idea how it started. My suspicion is ...
What are the main performance differences between varchar and nvarchar SQL Server data types?
...
What about index size, memory usage etc? I assume you always use int when you could use tinyint too "just in case"?
– gbn
Jul 9 '10 at 7:02
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