Articles tagged with

12 Feb 2024

Don’t bother: it is only a little expired

This story shows how we strive to fix issues reported by our customers regarding inconsistent listing views on our e-commerce platform. We will use a top-down manner to guide you through our story. At the beginning, we highlight the challenges faced by our customers, followed by presenting basic information on how views are personalized on our web application. We then delve deeper into our internal architecture, aiming to clarify how it supports High Availability (HA) by using two data centers. Finally, we advertise a little Couchbase, distributed NoSQL database, and explain why it is an excellent storage solution for such an architecture.

02 Sep 2019

Page visibility and performance metrics

When we measure the page loading speed from the user’s perspective, we pay attention to the appearance of subsequent elements on the screen. Metrics such as First Contentful Paint, First Meaningful Paint and Visually Complete directly reflect what the user sees and when. But what if the page is invisible, when it loads in the background, for example in a different tab? Should we consider such views interesting for us? Don’t the collected metrics distort the results?

17 Oct 2016

Advances in Information Retrieval and Allegro use case at SIGIR 2016

In July we attended the scientific conference SIGIR 2016 held in Pisa, Italy. SIGIR is an annual conference related to new advances in Information Retrieval. The shortcut is for Special Interest Group on Information Retrieval. This is an annual conference with the highest ranking at Microsoft Academic Research in Information Retrieval field field and the 16th in the ranking in the whole Computer Science field.

08 Sep 2015

Scaling Graphite

Switching from monolith to microservices requires a very solid technical ecosystem. One of the most crucial subsystems is monitoring. But for monitoring to work, you need data to monitor. At Allegro, we decided to use Graphite as metrics storage and to build our monitoring ecosystem around tools that integrate with it.