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Why do we need message brokers like RabbitMQ over a database like PostgreSQL?
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(source: springsource.com)
and: http://blog.springsource.org/2011/04/01/routing-topologies-for-performance-and-scalability-with-rabbitmq/
Finally, in regards to redis, yes, it can be used as a message broker, and can do well. However, Rabbitmq has more message queuing features than redis, a...
Replacing NAs with latest non-NA value
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164
You probably want to use the na.locf() function from the zoo package to carry the last observati...
Why is transposing a matrix of 512x512 much slower than transposing a matrix of 513x513?
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I'll try to somewhat follow the example from Agner:
Assume each set has 4 lines, each holding 64 bytes. We first attempt to read the address 0x2710, which goes in set 28. And then we also attempt to read addresses 0x2F00, 0x3700, 0x3F00 and 0x4700. All of these belong to the same set. Before read...
How to prevent http file caching in Apache httpd (MAMP)
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Header set Pragma "no-cache"
Header set Expires "Wed, 11 Jan 1984 05:00:00 GMT"
</ifModule>
</filesMatch>
100% Prevent Files from being cached
This is similar to how google ads employ the header Cache-Control: private, x-gzip-ok="" > to prevent caching of ads by proxies...
How to convert std::string to NSString?
...al encoding. */
– cyrilchampier
Nov 4 '12 at 15:14
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WPF Application that only has a tray icon
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114
There's no NotifyIcon for WPF.
A colleague of mine used this freely available library to good ef...
Why should Java ThreadLocal variables be static
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AffeAffe
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Confusion: @NotNull vs. @Column(nullable = false) with JPA and Hibernate
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4 Answers
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C++, Free-Store vs Heap
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Michael KovalMichael Koval
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What is Castle Windsor, and why should I care?
...erator.
Start here: http://tech.groups.yahoo.com/group/altdotnet/message/10434
Imagine you have an email sending class. EmailSender. Imagine you have another class WorkflowStepper. Inside WorkflowStepper you need to use EmailSender.
You could always say new EmailSender().Send(emailMessage);
but t...