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Tactics for using PHP in a high-load site
...isn't cutting, there are several techniques to scale up, depending on your app. Replicating to additional servers typically works well if you have more reads than writes. Sharding is a technique to split your data over many machines.
Caching
You probably don't want to cache in your database. The...
Best practices/guidance for maintaining assembly version numbers
...ers also mean different things depending on the context, is it an API, Web App, etc.
Major.Minor.Build.Revision
Revision This is the number taken from source control to identify what
was actually built.
Build This is an ever increasing number that can be used to find a
particular build on the bu...
Difference between CouchDB and Couchbase
...chOne, Couchbase, Couchbase Server, Couchbase Mobile, Couchbase Lite, CouchApps, BigCouch, Touchbase, Membase, Memcached, MemcacheDB... all different and yet related in a way not at all obvious from the names alone.
First, there was CouchDB, a database created by Damien Katz, a former IBM developer...
Mail multipart/alternative vs multipart/mixed
... else
cids.put(fileName,cid);
matcherCssUrl.appendReplacement(sb,replacement.replace("@cid",cid));
}
matcherCssUrl.appendTail(sb);
html = sb.toString();
return html;
}
private String getFileName(String fileName) {
if (fi...
How to debug Lock wait timeout exceeded on MySQL?
...ks a table, then sleeps while it waits for something non-MySQL-related to happen."
After re-re-reviewing the show engine innodb status log (once I'd tracked down the client responsible for the lock), I noticed the stuck thread in question was listed at the very bottom of the transaction list, benea...
WiX tricks and tips
...m variables for x86 and x64 builds
<!-- Product name as you want it to appear in Add/Remove Programs-->
<?if $(var.Platform) = x64 ?>
<?define ProductName = "Product Name (64 bit)" ?>
<?define Win64 = "yes" ?>
<?define PlatformProgramFilesFolder = "ProgramFiles64Fol...
Detect if Visual C++ Redistributable for Visual Studio 2012 is installed
...new registry convention being used for Visual C++ 2019. There also doesn't appear to be a standalone installer for Visual C++ 2019, only this bundle installer that is Visual C++ 2015 through 2019.
14.21.27702
Microsoft Visual C++ 2015-2019 Redistributable (x64) - 14.21.27702
Registry Key: [HKEY_CL...
What is an application binary interface (ABI)?
...e, you access the library through an API. Once the code is compiled, your application accesses the binary data in the library through the ABI. The ABI defines the structures and methods that your compiled application will use to access the external library (just like the API did), only on a lower ...
Is volatile expensive?
...rites can in fact be faster then with multiple processors. There are some applications that would in fact run faster concurrently with a single CPU then multiple.
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Algorithm to find top 10 search terms
....
Useful book in this area:
Muthukrishnan - "Data Streams: Algorithms and Applications"
Closely related reference to the problem at hand which I picked from the above:
Manku, Motwani - "Approximate Frequency Counts over Data Streams" [pdf]
By the way, Motwani, of Stanford, (edit) was an author of...