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How to scale Docker containers in production
...Docker applications:
http://panamax.io/
Update 15
The Docker project is now addressing orchestration natively (See announcement)
Docker machine
Docker swarm
Docker compose
Update 16
Spotify Helios
See also:
https://blog.docker.com/tag/helios/
Update 17
The Openstack project now has a n...
How to make an anchor tag refer to nothing?
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@eugene this question is 3 years old now, but IE used to make images disappear when surrounded by a link to a void function. Not sure when it was fixed, but it works in IE10, which is all I have installed. I personally now use <a href="javascript:;">
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Rails: update_attribute vs update_attributes
...nd(name.to_s + '=', value)
2616: save(false)
2617: end
and now refer update_attributes and look at its code you get
# File vendor/rails/activerecord/lib/active_record/base.rb, line 2621
2621: def update_attributes(attributes)
2622: self.attributes = attributes
26...
What is the definition of “interface” in object oriented programming
...you are projecting your expected semantics into an interface. For all you know, the TV could just explode when you plug it in. However, based on its "interface" you can assume that it won't make any coffee since it doesn't have a water intake.
In object oriented programming, an interface generally...
Tools for JPEG optimization? [closed]
Do you know of any tools (preferrably command-line) to automatically and losslessly optimize JPEGs that I could integrate into our build environment? For PNGs I'm currently using PNGOUT , and it generally saves around 40% bandwidth/image size.
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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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Javascript - Track mouse position
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Why tracking a value that you know for sure didn't change? I don't understand, unless it is a homework problem. With the event method, you can track every change of these values, then do a 100ms polling elsewhere if you need to handle these values for what...
convert_tz returns null
I know this sounds stupid, but when I use
9 Answers
9
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Best TCP port number range for internal applications [closed]
...ients without specifying port 1023 since it hooks you up to a server that knows nothing of the telnet protocol - we have to break out of the telnet client and do it properly:
telnet big_honking_mainframe_box.com 1023
If you really can't make the client side configurable, pick one in the second ra...
How to get image size (height & width) using JavaScript?
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This is now supported in IE9 and all modern web browsers.
– Aaron
May 18 '12 at 15:08
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