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How safe is it to store sessions with Redis?
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Redis is perfect for storing sessions. All operations are performed in memory, and so reads and writes will be fast.
The second aspect is persistence of session state. Redis gives you a lot of flexibility in how you want to persist session state to your hard-dis...
How can I define a composite primary key in SQL?
...(from that table). If a primary key consists of two or more columns it is called a composite primary key. It is defined as follows:
CREATE TABLE voting (
QuestionID NUMERIC,
MemberID NUMERIC,
PRIMARY KEY (QuestionID, MemberID)
);
The pair (QuestionID,MemberID) must then be unique for the ta...
How do I use Maven through a proxy?
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For details of setting up a proxy for Maven, see the mini guide.
Essentially you need to ensure the proxies section in either the global settings ([maven install]/conf/settings.xml), or user settings (${user.home}/.m2/settings.xml) is configured correctly. It is better to do this in your user set...
How can I safely create a nested directory?
...r versions of Python, I see two answers with good qualities, each with a small flaw, so I will give my take on it:
Try os.path.exists, and consider os.makedirs for the creation.
import os
if not os.path.exists(directory):
os.makedirs(directory)
As noted in comments and elsewhere, there's a r...
Difference between an application server and a servlet container?
...ost of the JavaEE technologies on a servlet-container, but you have to install a standalone implementation of the particular technology.
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Loop through each row of a range in Excel
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Just stumbled upon this and thought I would suggest my solution. I typically like to use the built in functionality of assigning a range to an multi-dim array (I guess it's also the JS Programmer in me).
I frequently write code like this:
Sub arrayBuilder()
myarray = Range("A1:D4")
'unlike mo...
redirect COPY of stdout to log file from within bash script itself
...ll, not a child process, wait cannot be used to synchronize output to the calling process. What you want is an unbuffered version of tee similar to bogomips.org/rainbows.git/commit/…
– user246672
Feb 13 '12 at 15:15
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How to set DialogFragment's width and height?
I specify the layout of my DialogFragment in an xml layout file (let's call it layout_mydialogfragment.xml ), and its layout_width and layout_height attributes particularly (to be 100dp each let's say). I then inflate this layout in my DialogFragment's onCreateView(...) method as follows:
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What is the `sensor` parameter for in the Google Places API?
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Really? Could you please provide some link, where this is written. I have not found this anywhere. (Also wondering why the price is different and what is cheaper:)
– TN.
Dec 25 '11 at 21:1...
unix domain socket VS named pipes?
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UNIX-domain sockets are generally more flexible than named pipes. Some of their advantages are:
You can use them for more than two processes communicating (eg. a server process with potentially multiple client processes connecting);
They are bidirecti...