How to use locks in PHP cron jobs to avoid cron overlaps

Cron jobs are hidden building blocks for most of the websites. They are generally used to process/aggregate data in the background. However as a website starts to grow and there is gigabytes of data to be processed by every cron job, chances are that our cron jobs might overlap and possibly corrupt our data. In this blog post, I will demonstrate how can we avoid such overlaps by using simple …

Calendar with Auto-Notification : API and demo.

I was quite impressed with the Google Calendar, Yahoo Calendar and Outlook implementation of the same and wondered how exactly is it done? What are the challenges? So I thought of making a clone of one of them and see if I am able to achieve the same level of perfection. I must say my 1 day of work did indeed brought some smile to my face as I could …