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How can I use redis with Django?
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This Python module for Redis has a clear usage example in the readme: http://github.com/andymccurdy/redis-py
Redis is designed to be a RAM cache. It supports basic GET and SET of keys plus the storing of collections such as dictionaries. You can cache RDBMS queries by storing their output in ...
Why use argparse rather than optparse?
...ture.
argparse is better for all the reasons listed on its original page (https://code.google.com/archive/p/argparse/):
handling positional arguments
supporting sub-commands
allowing alternative option prefixes like + and /
handling zero-or-more and one-or-more style arguments
producing more info...
what does the __file__ variable mean/do?
...are considered to be "special" by convention and serve a special purpose.
http://docs.python.org/reference/datamodel.html shows many of the special methods and attributes, if not all of them.
In this case __file__ is an attribute of a module (a module object). In Python a .py file is a module. S...
Why are unsigned int's not CLS compliant?
...VB7/7.1 not to implement as well (it's implemented now in VB8).
To quote:
http://msdn.microsoft.com/en-us/library/12a7a7h3.aspx
The CLS was designed to be large enough to include the language
constructs that are commonly needed by developers, yet small enough
that most languages are able to support...
When to use a key/value store such as Redis instead/along side of a SQL database?
...I think nothing explains better the use cases for Redis than this article:
http://antirez.com/post/take-advantage-of-redis-adding-it-to-your-stack.html
I bet you'll have an aha! moment. ;)
A quote from a previous reader:
I've read about Redis before and heard how companies are using it, but ne...
What is the memory consumption of an object in Java?
...n overhead of 16 bytes on 32-bit systems (and 24-byte on 64-bit systems).
http://algs4.cs.princeton.edu/14analysis/ is a good source of information. One example among many good ones is the following.
http://www.cs.virginia.edu/kim/publicity/pldi09tutorials/memory-efficient-java-tutorial.pdf is a...
Backing beans (@ManagedBean) or CDI Beans (@Named)?
...d-like annotation for CDI beans, but I haven't played with it personally.
http://seamframework.org/Seam3/FacesModule
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Difference between class and type
... a variable has a type, and classes are a kind of a type.
More info here: http://docs.oracle.com/javase/specs/jls/se8/html/jls-4.html
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NHibernate ISession Flush: Where and when to use it, and why?
... are two examples of my code where it would fail without session.Flush():
http://www.lucidcoding.blogspot.co.uk/2012/05/changing-type-of-entity-persistence.html
at the end of this, you can see a section of code where I set identity insert on, save the entity then flush, then set identity insert of...
What is Normalisation (or Normalization)?
...nly do de-normalisation when really needed
P.S. also check this article: http://en.wikipedia.org/wiki/Database_normalization to read more on the subject and about so-called normal forms
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