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Differences between socket.io and websockets
...ket.io uses the websockets technology if available, and if not, checks the best communication type available and uses it.
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Sticky and NON-Sticky sessions
... Then sticky session allows you to have only one session replica, which is best in large cluster.
– Nico
Jan 14 '19 at 14:44
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What does it mean to hydrate an object?
...ate
You asked about this framework specifically, so I looked into it.
As best as I can tell, I don't think this project used the word "hydrate" in a very generic sense. I see its use in the title as an approximate synonym for "serialization". As explained above, this usage isn't entirely accurate:...
What is the difference between Google App Engine and Google Compute Engine?
...tom runtimes and greater
control over cluster configuration.
Embodies many best practices working with virtual machines, such as immutable runtime environments and easy ability to roll back to previous versions
Provides a consistent and repeatable deployment framework
Based on open standards, notabl...
How can I extract embedded fonts from a PDF as valid font files?
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One of the best online tools currently available to extract pdf fonts is http://www.pdfconvertonline.com/extract-pdf-fonts-online.html
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What are the use cases of Graph-based Databases (http://neo4j.org/)? [closed]
... overlaps existing data already in the system.
Yes, I know some data is best modeled in RDBMS, but I have this idea itching me, that when you need to superimpose several distinct tables, the graph model is better than the table structure.
For instance, I work in a manufacturing environment. T...
What is the function of the push / pop instructions used on registers in x86 assembly?
...nto a nice stack pattern, which prevents memory fragmentation, that is the best way to deal with it. Compare that with the insanity of writing a heap allocator.
Then we let compilers optimize the register allocation for us, since that is NP complete, and one of the hardest parts of writing a compil...
Explicitly calling return in a function or not
...el showed. Alternatively, there are situations where a return statement is best omitted, e.g. lots and lots of small function calls. In all other, say 95%, of the cases it does not really matter if one uses return or not, and it comes down to preference. I like using return as it is more explicit in...
Greedy vs. Reluctant vs. Possessive Quantifiers
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http://swtch.com/~rsc/regexp/regexp1.html
I'm not sure that's the best explanation on the internet, but it's reasonably well written and appropriately detailed, and I keep coming back to it. You might want to check it out.
If you want a higher-level (less detailed explanation), for simple ...
Peak detection in a 2D array
...ch combination of 5 fingers:
for each finger out of 5:
fit the best circle to the remaining 4
=> position of the center, radius
check if the selected finger is inside of the circle
check if the remaining four are evenly spread
(for example, consider ang...