Our way of Continuous Deployment — As Homepage & Recommendation Team, we lately have been working on improving our deployment experience in Trendyol. We wanted to share our story and tell you why and how we did it. Start of the journey We were actively using Argo as a GitOps solution, as time passed we also wanted to use its…

A journey of scaling for high write throughput — As Homepage & Recommendation Team, we lately have been working very hard to improve our scaling for Recommendations in Trendyol. We’ve stopped using relational database and transformed our datasource to NoSQL (Couchbase) without losing essential features. …

The story of migrating a 1 million throughput domain — Favorites in Trendyol; most people in Turkey have either used or heard it. We’ve stopped using GraphDB and transformed our data source to NoSQL (Couchbase) without compromising its essential features. We wanted to share our experiences and tell you why and how we did it. Let’s first start with our…

Design patterns explained with simple examples — 1- Strategy Pattern “Strategy Pattern defines a family of algorithms, encapsulates each one, and makes them interchangeable. Strategy lets the algorithm vary independently from clients that use them.”

A quick guide to releasing resources properly — Go is widely being used for backend programming and its community is growing larger each day. Personally I love coding in Go. I wanted to show a quick guide on how to gracefully shutdown our Go applications, which is actually a very easy process. This story is about how to…

A quick guide to omitempty, default values and nil — Go is widely being used for backend programming and its community is growing larger each day. Personally I love coding in Go. Lately I was working on a project that has optional fields in its datasource and needed to manipulate the response based on business needs. …

A quick guide to goroutines & channels — Go is widely being used for backend programming and its community is growing larger each day. Most people choose Go because of its easy-to-implement concurrency abilities. This story is about how to implement concurrency in Go with a step-by-step guide. …

Lately, in our team in Trendyol, we’ve slowly adapted to Quarkus for our Java projects due to its high performance (and we absolutely recommend it!). In this particular API, we wanted to send messages to a topic, and we were pretty used to doing it in Spring, but it was…