by Nagarajan Ponnusamy | Apr 15, 2026 | Databases, MongoDB
If you’ve worked with MongoDB for some time, you’ve probably had this thought at least once: “We already created a unique index… so duplicates shouldn’t happen.” It sounds logical. It feels safe. And honestly, most of us trust that — until we see duplicate data...
by Nagarajan Ponnusamy | Mar 3, 2026 | Databases, MongoDB
If you’ve ever had someone say, “The query is slow, just add an index,” this post is for you.In my recent MongoDB indexing session, we didn’t talk about syntax or fancy commands. We talked about something more uncomfortable and more important: what an index does to...
by revathisreem | Feb 17, 2026 | Databases, General, KnowledgeBase, MongoDB
If you’ve worked with MongoDB long enough, you’ve probably used TTL indexes at least once. And if you’ve worked in production long enough, you’ve probably seen them surprise someone. TTL (Time-To-Live) indexes are one of those features that look simple: “Create an...
by revathisreem | Jan 20, 2026 | Databases, KnowledgeBase, MongoDB
If you have run MongoDB in production long enough, you learn a hard truth: Data loss is not hypothetical. It is inevitable. It does not matter whether you operate on-prod or in the cloud, self-managed or Atlas. Disks fail. Regions go dark. Automation scripts misfire....
by revathisreem | Dec 23, 2025 | Databases, General, KnowledgeBase, MongoDB
Data consistency in MongoDB often looks simple—until a failover happens during peak traffic, dashboards disagree with backend state, or “successful” writes quietly disappear. Most teams don’t hit these problems in development. They hit them in production, under...
by revathisreem | Nov 25, 2025 | Databases, General, KnowledgeBase, MongoDB
There’s something that always surprises me about MongoDB performance tuning:No matter how many clusters we help, no matter the industry — fintech, gaming, e-commerce, IoT — the same mistakes creep in again and again. And the funny thing is, they rarely come from...
