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RabbitMQ and relationship between channel and connection

...ts a real TCP connection to the message broker, whereas a Channel is a virtual connection (AMQP connection) inside it. This way you can use as many (virtual) connections as you want inside your application without overloading the broker with TCP connections. You can use one Channel for everything. H...
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How many GCC optimization levels are there?

... To be pedantic, there are 8 different valid -O options you can give to gcc, though there are some that mean the same thing. The original version of this answer stated there were 7 options. GCC has since added -Og to bring the total to 8 From the man page: -O (Same as -O1) ...
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How to use glOrtho() in OpenGL?

I can't understand the usage of glOrtho . Can someone explain what it is used for? 3 Answers ...
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Difference between CouchDB and Couchbase

Are there any essential differences between CouchDB and Couchbase . 3 Answers 3 ...
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How to use the same C++ code for Android and iOS?

Android with NDK has support to C/C++ code and iOS with Objective-C++ has support too, so how can I write applications with native C/C++ code shared between Android and iOS? ...
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How do I initialize a byte array in Java?

I have to store some constant values (UUIDs) in byte array form in java, and I'm wondering what the best way to initialize those static arrays would be. This is how I'm currently doing it, but I feel like there must be a better way. ...
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ab load testing

Can someone please walk me through the process of how I can load test my website using apache bench tool ( ab )? 5 Answer...
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How many bytes does one Unicode character take?

I am a bit confused about encodings. As far as I know old ASCII characters took one byte per character. How many bytes does a Unicode character require? ...
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What does the Reflect object do in JavaScript?

I saw a blank stub on MDN a while ago for the Reflect object in javascript but I can't for the life of me find anything on Google. Today I found this http://people.mozilla.org/~jorendorff/es6-draft.html#sec-reflect-object and it sounds similar to the Proxy object apart from the realm and loader ...
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How to get git diff with full context?

How to create patch suitable for reviewing in crucible? 6 Answers 6 ...