Solve MySQL ERROR 1005: Can’t create table (errno: 150)
Bug: Above error occurs when rebuilding a database from the SQL script. Reason: This error usually occurs when the table being created cannot fulfill a foreign ...
Author: Sreekumar Kj
Sreekumar (KJ) has been a hobby programmer from school days. Codemarvels is his personal blog from the year 2010, where he writes about technology, philosophy, society and a bit about physics.
He now runs a conversational AI company - DheeYantra - focusing his efforts to help businesses improve operational efficiency using digital employees powered by AI.
How to enable CAS without SSL
This is a tiny tutorial on steps required to enable CAS (Jasig, v3.4x ) single-sign-out without SSL. These are the steps involved to remove dependency on SSL – ...
Apache : RewriteRule vs Alias
A small note on order of execution of a RewriteRule directive and a folder Alias on Apache HTTPD – RewriteRule is always executed before the Alias, thus making ...
Enabling SSL on a Tomcat “devl” machine (Windows)
These are the steps involved to enable SSL on Tomcat on developer machine for test purposes. 1. Create a certificate key store Run this command in the command p...
BoshServlet – Bugs and fixes
No bugs ??? Sreekumar KjSreekumar (KJ) has been a hobby programmer from school days. Codemarvels is his personal blog from the year 2010, where he writes about ...
Installing PHP5.3.3 on Apache 2.2x (Windows)
List of steps involved in getting PHP5 to work with a pre-installed Apache server on Windows. Download the file “php-5.3.3-Win32-VC6-x86.zip” from “http://windo...
Apache mod_rewrite: How to use a Java RewriteMap?
This example shows how to use a Java program as a RewriteMap in Apache Httpd server. Prerequisites on the server box: Apache HTTPD 2.2x. JDK/JRE. What does the ...
Apache RewriteRule : Set a session cookie on localhost
Here are the 2 (often left out) requirements to set a cookie using httpd’s rewrite rule (mod_rewrite), while working on localhost: Use the IP 127.0.0.1 instead...
Gyroscopic Precession – the intuitive explanation
If you have done a course in rotational dynamics you would remember the *procedure* involved in solving problems on gyroscopic precession. Don’t remember ? Ok. ...
Speed of Light, Parallel Universes and the “Try-Catch-Block”
The possibility of parallel universes hinted by modern physics is always fascinating to think about. Needless to say, it is difficult to imagine a “parallel” un...