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Difference between scaling horizontally and vertically for databases [closed]
...ata resides on a single node and scaling is done through multi-core i.e. spreading the load between the CPU and RAM resources of that machine.
With horizontal-scaling it is often easier to scale dynamically by adding more machines into the existing pool - Vertical-scaling is often limited to the cap...
How to prevent SIGPIPEs (or handle them properly)
...all server program that accepts connections on a TCP or local UNIX socket, reads a simple command and, depending on the command, sends a reply. The problem is that the client may have no interest in the answer sometimes and exits early, so writing to that socket will cause a SIGPIPE and make my serv...
Convert pem key to ssh-rsa format
... You can do the same with ssh-keygen:
ssh-keygen -f pub1key.pub -i
will read the public key in openssl format from pub1key.pub and output it in OpenSSH format.
Note: In some cases you will need to specify the input format:
ssh-keygen -f pub1key.pub -i -mPKCS8
From the ssh-keygen docs (From ma...
Workflow for statistical analysis and report writing
... care of loading in all the data required. Typically this is a short file, reading in data from files, URLs and/or ODBC. Depending on the project at this point I'll either write out the workspace using save() or just keep things in memory for the next step.
clean.R: This is where all the ugly stuff...
How to parse JSON in Python?
...rformance. More recent versions provide optimizations that greatly improve read and writing.
– unode
Oct 14 '11 at 19:11
...
How to make a great R reproducible example
...ta)).
Worst case scenario, you can give a text representation that can be read in using the text parameter of read.table :
zz <- "Sepal.Length Sepal.Width Petal.Length Petal.Width Species
1 5.1 3.5 1.4 0.2 setosa
2 4.9 3.0 1.4 ...
Get a list of resources from classpath directory
... InputStream in = getResourceAsStream(path);
BufferedReader br = new BufferedReader(new InputStreamReader(in)))
String resource;
while ((resource = br.readLine()) != null) {
filenames.add(resource);
}
}
return filenames;
}
private ...
Memcached vs. Redis? [closed]
...e is how they compare using the original question's "Points to Consider":
Read/write speed: Both are extremely fast. Benchmarks vary by workload, versions, and many other factors but generally show redis to be as fast or almost as fast as memcached. I recommend redis, but not because memcached is s...
What is your most productive shortcut with Vim?
...a paragraph of text I cut it using { d} (3 keystrokes). (If I happen to already be on the first or last line of the paragraph I can then simply use d} or d{ respectively.
The notion of "paragraph" defaults to something which is usually intuitively reasonable. Thus it often works for code as well a...
Bordered UITextView
... XCode don't let me to set border for layer. It says that layer is read-only. I made UIView (where put some elements) and trying to set border to that view. Trying to do this self.myView.layer.borderWidth ..., but as I said, layer is read-only, so layer don't have any methods or variables to...