Gregory Hogg

What do you think is hardest category of Leetcode? And don't say hard 😂

if you're a software dev... it's a crime to not be vibe-coding away your days. I run a business (teaching…

"I know my stuff but I forget it during the interview". A lot of software devs start the call telling me…

New video on LRU cache coming shortly. Definitely learn this problem if you haven't already. Great exercise…

Learning Leetcode is easy. Leetcode itself? Hard. I mean, there's literally 'Hard' problems. I find them…

It’s probably not leetcode

Software devs… focus on the bottleneck

Crush Tech Interviews at Algomap.io - directly from me - link in bio

Video compression is the process of reducing the file size of a video so it can be streamed easily over the…

Adaptive streaming allows video platforms like YouTube to deliver smooth playback regardless of network…

Geohashing is a hierarchical spatial data structure that encodes a geographic location into a short string…

Auto-increment IDs cause major challenges when scaling a system across multiple distributed databases. In a…

Twitter Snowflake is a distributed unique ID generator system created by Twitter. It is designed to generate…

Chaos engineering is the practice of intentionally introducing failures into a system to test its…

Regression testing is the process of verifying that recent code changes have not broken existing features.…

Integration testing is the phase where individual software modules are combined and tested as a group. It…

Unit testing is the process of verifying the smallest functional parts of an application. A unit is…

The testing pyramid is a framework used to balance different types of software tests. It recommends a high…

SQL queries are not executed in the same order that they are written by the programmer. The database engine…

CI CD is a set of practices that automates the process of software delivery. Continuous Integration involves…

A Dead Letter Queue or DLQ is a specialized queue for messages that cannot be processed successfully. When a…

Acknowledgements or ACKs are signals sent between components to confirm that data was received. When a…

Apache Kafka is a distributed streaming platform designed for high throughput and fault tolerance. It…

A message queue is a component that allows different parts of a system to communicate asynchronously. It…