A transaction groups several database writes into one atomic unit. Either all of them commit, or none of them do. That is the guarantee you are buying: you never end up with half the work done and a database that contradicts itself.
People recite the full ACID list (atomicity, consistency, isolation, durability), but the property I actually reach for day to day is atomicity. All or noth...
Your payment tests passed in staging. Then PhonePe pushed an SDK update on Tuesday, the UPI intent deep link stopped launching on Samsung devices, and 12% of Wednesday's checkout attempts failed silently. The payment was never charged. The order was never placed. The user saw a frozen screen and uninstalled.
Payment testing is the highest-stakes, highest-maintenance area of mobile QA. I...
If you're learning Data Analytics and looking to build a strong portfolio, working on real-world projects is one of the best ways to gain practical experience.
In this article, I've compiled some of the most popular and valuable Data Analytics project ideas across different domains.
Business analytics projects help organiz...
When I started building my Smart Budget Tracker app, I noticed I was copy-pasting button code everywhere - submit buttons, link buttons, loading buttons. Each one looked slightly different. That's when I decided to build one reusable button component to rule them all.
In this post I'll walk you through how I built it using React and TypeScript.
<...The 7-stage B2B sales process from a workflow engineering perspective. What breaks at each stage. What to automate. What to keep human.
Every B2B sales process looks clean on a whiteboard. Prospect → Qualify → Discover → Demo → Propose → Negotiate → Close. Seven stages. Linear progression. Neat arrows between each one.
Then you add 15 reps, 400 active deals, 6 tools, an...
I got asked this in an interview years ago, and I've asked it from the other side of the table since. I like it because the lazy answer ("index everything") is wrong, and the real skill is knowing where to look before you touch anything. So here's the whole loop: how I spot a column that needs an index, how I prove the index actually helped, and what it costs me to add one.