Author: ACMer

Querying the Database e.g. MySQL could be very expensive relative to just a cache which is just a key value store . And for SELECT statements, we want to …

Let’s say we want to put a REL=NOFOLLOW on all external links in your wordpress posts/pages, we can add a filter to parse the content using the regular expression …

So you have designed your own website. What’s the next step? You need a domain and a host. Domains and domain names are relatively easy if you choose it …

Given two non-empty binary trees s and t, check whether tree t has exactly the same structure and node values with a subtree of s. A subtree of s …

One of the main problems that website owners face is slow loading times and poor website performance which can affect website search engine ranking and lose valuable traffic. The …