Omniclient

For this project, the AR agency’s team was responsible for the creative concept, copywriting, design, and promotion. We covered the engineering side: frontend development, quiz logic, backend architecture, and web analytics setup.

In 90% of cases, quiz logic does not require a backend, but here it became the core of the task and our primary technical challenge. We were commissioned to build an architecture where thousands of users' answers are concurrently written to a database and instantly displayed in the interface — allowing every participant to compare their choices with the majority. There was zero margin for error: the quiz had to run flawlessly across all devices, and the server had to withstand peak traffic without a single failure.

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The implementation timeline was set at two weeks, which is a standard timeframe for us on such projects. However, we decided to play it safe and architect the server infrastructure even before receiving the design mockups. We opted for PHP + SQLite — a technology stack that met the project's demands with a massive safety margin. By the time frontend development began, the initial builds and a demo environment were already prepared.

Within the backend architecture, we anticipated everything that could negatively impact server stability under load. To guarantee security and prevent crashes, we implemented the following solutions: WAL mode (for query optimization), a Rate Limiter (against DDoS attacks), and fail-fast logic (in case of hosting-side emergencies).

Thanks to a solid time buffer, we chose an alternative, more complex frontend methodology. Instead of assembling 12 static screens, the project was built as a Single Page Application (SPA) utilizing just 4 template components: onboarding, question, answer, and finale.

As a result, all routing, interactivity, and content swapping logic is driven by a single, monolithic script of 35,000 characters. Text and graphics are injected dynamically. This approach eliminates code duplication, accelerates project loading speeds, and improves interface responsiveness, ultimately having a positive impact on final conversion rates.

Prior to delivery, we optimized on-page SEO, passed technical audits, and maximized PageSpeed metrics. For transparent funnel monitoring, we integrated Yandex Metrica and configured the tracking of 38 unique events.

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The project was delivered turnkey in just 11 days. We completed development ahead of the deadline, ensuring a smooth and guaranteed launch. This case study marked an important milestone for our team: we significantly deepened our expertise in designing quizzes with integrated server functionality and reduced our standard time-to-market for similar solutions by 20%.

Under the demands of a promotional campaign, the infrastructure processed over 68,000 visits and handled peak loads (over 4,500 daily users) without a single error, maintaining an impressive performance overhead. The unconventional frontend approach also fully paid off: building the project as an SPA enabled us to achieve outstanding performance metrics — scoring 93 in Google PageSpeed Performance on mobile and 99 on desktop.

Our collaboration format with the AR agency demonstrated that the synergy of strong creative work and reliable engineering enables the launch of large-scale ad campaigns with zero technical risks. For Magnit Omni, the project transcended a standard promo and evolved into a comprehensive CustDev study. Beyond hitting baseline metrics, the brand gained direct insights into exactly what users want to improve in the service.

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