You already have the data. Compass is how everyone asks it. You already know the question. What was DAU today? What’s the order’s success rate over the last few months? How many new users did X and Y, and are they sitting at the stage of doing Z? This escalation just landed.…
How Groww tracks cross-border payments between India and the US, ensuring every dollar is accounted for. Author: Aditi Gour Introduction Every business day, SWIFT wires cross between India and the US, and each one carries many people's money in a single lump. Deposits travel out…
This article explains how a Storage Pool absorbed the boot disks and made them almost free. The same boot disks also became home to ephemeral data such as Trino cache, task spill, and Spark shuffle through emptyDir. But this introduced an unexpected problem: deleted transient…
This article explains how multiple Kafka clusters went on a storage diet when we moved from a traditional fixed-cost disk architecture to a Storage Pool model. We will follow Kafka from its recovery and performance requirements through Strimzi KafkaNodePools, zonal placement,…
You already have the data. Compass is how everyone asks it. You already know the question. What was DAU today? What’s the order's success rate over the last few months. How many new users did X and Y, and are they sitting at the stage of doing Z? This escalation just landed.…
How we built a minimal, independent path to the exchange that stays up even when the rest of Groww doesn’t. Author: Gaurav Agrawal Why Groww Lite Exists Every large trading platform eventually runs into the same uncomfortable truth: A rich product experience might involve using…
Introduction In the previous article, we shared how we redesigned Holdings retrieval to eliminate unnecessary work. The architecture looked solid, and the rollout was ready. Then we deployed it. With millions of users accessing Holdings every day, the rollout looked healthy…
There’s a version of a security operations centre that exists mainly to be pointed at. It ingests every log it can reach, lights up a wall of dashboards, and staffs a rotation around the clock so that, if anyone asks, the answer is “yes, someone is watching.” It satisfies an…
Introduction At 9:15 AM IST, the opening bell rings on the Indian stock market — and millions of investors reach for the same screen. Within seconds, millions of investors open the Holdings page. They want to know how overnight news has impacted their stocks, whether they’re in…
Author: Nishant Kumar Delivering a seamless, fast, and reliable user experience is at the core of everything we do at Groww. In trading and investing, every second and every user action counts, so optimising even the smallest interface element can make a meaningful difference.…
Quick primer for non-traders: an option chain is the core screen option traders live on. The middle column is a list of strike prices (the price at which a contract can be exercised). To the left sit the Call contracts for each strike (used to bet on the price going up); to the…
Author: Shivam Narula At Groww, our infrastructure runs on Google Cloud Platform (GCP) and is managed declaratively using Crossplane. As our platform grew, our engineering teams needed to provision load balancers across a wide range of configurations: external and internal,…
Author: Kartik Ukhalkar In a typical SOA, if your service is misbehaving, what is the most efficient way to detect it while minimising the noise? Whether you are an administrator or developer, you would have thought about this problem a few times. We asked ourselves the same…
Author: Subhan Shariff In 2009, Atul Gawande published The Checklist Manifesto. A two-minute pre-surgery checklist confirming patient identity, reviewing allergies, and counting instruments reduced major surgical complications by 36% worldwide. This was not because surgeons were…
In financial systems, a lot of critical work happens quietly after market hours. Once the stock market closes, exchanges share multiple large files with brokers. These include trade files, contract details, holding updates, and daily charges. These files contain thousands, and…
Author: Rijul Gupta In a fast-growing product company, engineering teams are expected to move quickly and ship confidently. Even with solid engineering practices, every mature system reaches a stage where the cost of change rises steadily — both in terms of risk and time to…