High-Performance POS Transaction Processing System
Our customer, an innovative fin-tech startup, envisioned a system that would connect millions of point of sale terminals in retail and other establishments across the country to a single cloud-based backend, which would allow to track, record, store, analyze, and visualize cash transaction data so it can be used for a variety of purposes (fiscal, retail analytics, digital marketing, etc.).
First Line’s Solution for connecting millions of POS terminals across the country to a single cloud-based backend
First Line’s engineers architected and developed an extremely high-performance system that enables over 2.5 million POS terminals to stream cash transaction data in real-time to the cloud backend.
After capturing the transaction, the system and returns a unique code to the POS terminal in a fraction of a second, which is printed on the customer receipt.
Any customer can later go online, find their individual transaction, and verify that it was properly recorded; this also enables other services, e.g. taking part in a lottery.
The heart of the system is a very robust, high load, high-performance database.
The system is capable of processing over 15,000 transactions per second, with a peak throughput of over 70,000 transactions per second. That’s over 1.5 billion transactions per day.
The operational data capture is powered by Redis, and the persistence database is implemented using PostgreSQL. The persistence storage is also highly secure and uses hashes to prevent any subsequent changes to the captured data.
Results
First Line has developed a system that achieves enormous performance on an open-source software stack and using relatively inexpensive hardware, which helps control TCO as the system is being scaled.
The service-oriented architecture (SOA) of the system provides for a way to continuously and seamlessly add new services to this retail software in the future.
In addition to high performance and success with big data operations, this cloud software for retail will also offer a set of services to retailers around big data analytics and data visualization, such as:
- financial analysis
- accounting and bookkeeping
- demand analytics
- warehouse services,
and many and others.
First Line is performing the business analysis, as well as UX and UI design for all services.
Project statistics
- Team size: 15 people
- Total effort: 225 person-months
Download the case study by clicking the PDF icon on the left-hand side above.
Download Case Study: POS Transaction Processing System
Download Case Study
related projects

Customer service and eCommerce portal developed for largest logistics operator in Russia
First Line Software was engaged to develop new functionality for what was a static portal to automate the ability for customers to order and pay for a range of services as well as maintain and optimize the performance of the system.
Show details
Printed catalog converted to digital format and integrated with newly automated subscription service
First Line Software was engaged to create a digital subscription catalog and integrate it into the online subscription order placement system.
Show details
Immunization Repository for a Large Healthcare Delivery System
Our client is one of the largest not-for-profit hospital and physician networks in the United States with over 15,000 providers and over 2 million patients under care.
Show detailsContact Us
USA
Cambridge MA
1 Broadway,
14th Floor,
Cambridge MA 02142, USA
Netherlands
The Hague
Louis Couperusplein 2,
4th floor 2514HP,
The Hague
Australia
Doreen, Victoria
22 Journey Ave,
Doreen VIC 3754
United Kingdom
Gloucestershire
Cowley House,
12 Black Jack Street Cirencester
Gloucestershire, GL7 2AA, UK
Czech Republic
Praha
Na Havránce
1 508/14,
143 00 Praha 12,
Czech Republic
from March 1st:
Na Hřebenech
II 1718/8,
140 00 Praha 4
Czech Republic
Brno
Centrum, Šumavská,
Šumavská 416/15,
602 00 Brno,
Czech Republic
Send us a note
We'll do our best to answer within one hour