Speeding up MegaFon
services with Tarantool

The modern architecture of MegaFon allows creating microservices based on caches, lifting data from different domains. The operator stores data in the billing system, while Tarantool storefronts help to quickly interact with them. In just two years of cooperation, the MegaFon and Tarantool teams have jointly created more than 25 services.

One of the first projects was the user’s product data mart. The data from the storefront is used in the personal and mobile account. The service stores information about all relevant products of the user, calculates and makes personalized commercial offers.

This data mart uses data from 6 servers in 3 data centers, processes 700 gigabytes of data in RAM, and creates 3,000 records per second. Updates from the master system arrive at the data mart with a one-second lag.

Tarantool is used as a high-performance solution in the MegaFon real-time marketing (RTM) project. The project is designed to personalize the approach to each client and respond to events in real time. Several Tarantool storefronts solve the issue of fast access to data. RTM marts retrieve and process about 1.5TB of data.

Another popular service is the tariff calculator. The service shows the interface to the client, caches price parameters from Oracle, and calculates an offer according to the business logic right inside Tarantool. In fact, the calculator gives the required cost of tariffs virtually without delay, in real time.