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Is there any NoSQL data store that is ACID compliant?
...ntion of CAP theorem. Being more familiar with "nosql" db's now than I was then has only reinforced the separation of the concepts. Also, key-value vs doc databases, since there are architectural differences.
– AJ.
Jul 25 '12 at 3:22
...
Shards and replicas in Elasticsearch
...t manage to understand it. If I download Elasticsearch and run the script, then from what I know I have started a cluster with a single node. Now this node (my PC) have 5 shards (?) and some replicas (?).
...
Change values while iterating
...I'm still a little bit confuse here. If the 2nd value of for loop is a[i], then what is the different between the a[i] from the for loop and the a[i] as we write? It looks like the same thing but it isn't, right?
– Tiến Nguyễn Hoàng
Jun 5 '18 at 1:52
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Storing time-series data, relational or non?
...of sequential data. Now if you have enough RAM to store a years worth data then nothing like using Redis/MongoDB etc.
Mostly NoSQL databases will store your data on same location on disk and in compressed form to avoid multiple disk access.
NoSQL does the same thing as creating the index on device...
How to keep Maven profiles which are activeByDefault active even if another profile gets activated?
...;/activation>
...
</profile>
</profiles>
You should then be able to deactivate the profile with -DskipFirstProfile
or with -P !firstProfile, but otherwise the profile will be active.
See: Maven: The Complete Reference, Profile Activation - Activation by the Absence of a Prop...
Why was “Avoid Enums Where You Only Need Ints” removed from Android's performance tips?
...ide for large objects. Instead of putting everything in the same heap,
and then having to find space for large objects amidst all the tiny ones, ART puts all the large objects and bitmaps in a separate heap. And then the small objects go in the separate heap. Also it can defragment.
After ART, if y...
Validating an XML against referenced XSD in C#
...eaderSettings instance and pass that to your XmlReader when you create it. Then you can subscribe to the ValidationEventHandler in the settings to receive validation errors. Your code will end up looking like this:
using System.Xml;
using System.Xml.Schema;
using System.IO;
public class ValidXSD
{...
How to swap keys and values in a hash
...a: 1, b: 2, c: 3}.key(1)
=> :a
If you want to keep the inverted hash, then Hash#invert should work for most situations:
{a: 1, b: 2, c: 3}.invert
=> {1=>:a, 2=>:b, 3=>:c}
BUT...
If you have duplicate values, invert will discard all but the last occurrence of your values (because...
What is a message pump?
.... There is a main loop which always runs looking at this message queue and then dispatching the messages (or events) to the listeners.
The Wikipedia article Message loop in Microsoft Windows shows example code of a basic Windows program -- and as you can see at the most basic level a Windows progra...
What blocks Ruby, Python to get Javascript V8 speed? [closed]
... SpiderMonkey has comparable performance so, how did Mozilla did it then? They've very limited money..
– Salman von Abbas
Jul 26 '13 at 8:43
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