In 2025, the Sri Lanka Olympiad Mathematics Foundation (Department of Mathematics, University of Colombo) successfully conducted a high-stakes assessment on Quilgo with a large number of simultaneous test-takers. This real-world example underscores the importance of concurrency reliability when selecting an online testing platform.
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Top 5 Challenges Companies Encounter Before Selecting a Concurrency-Reliable Testing Service

1. Infrastructure Instability Under Load

Most testing platforms rely on infrastructure that works well under regular traffic but rapidly degrades under peak load. Without distributed architecture and automated scaling, systems may freeze, slow down, or crash exactly when needed most.

2. Data Integrity Failures

High concurrency puts pressure on databases and messaging queues. Poorly optimised systems may lose responses, save incomplete submissions, or mis-timestamp events, issues that can be catastrophic for high-stakes testing.

3. Latency and Deterioration of User Experience

When thousands of users interact with the system simultaneously, platforms with suboptimal caching or limited throughput begin to lag. Even minor latency can stress test-takers and harm completion rates.

4. Lack of Real-Time Monitoring and Failover

Many platforms lack dynamic health monitoring, autoscaling, and failover mechanisms. Without real-time observability, minor issues quickly turn into system-wide outages during concurrency spikes.

5. Vendor Claims Lacking Measurable Evidence

A common problem is that services claim they "support high loads" without offering real metrics, stress-test results, or transparency. Buyers often discover limitations only after system failure, which is too late.

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Why Quilgo Specialises in High-Concurrency Testing

At Quilgo, we consider concurrency a fundamental capability of our product rather than an afterthought. Our commitment to high-load reliability is one of our defining features. We continuously optimise our architecture to support large-scale, time-sensitive examinations.

Proven Performance: Over 10,000 Simultaneous Tests

Our infrastructure is designed to confidently handle over 10,000 concurrent test sessions without any performance degradation.

This includes:

• A distributed, horizontally scalable architecture
• - Intelligent load balancing
• - Resilient message queues
• - High-availability storage optimised for parallel write operations
• - Predictive autoscaling to prepare for traffic surges

This design ensures that even during extensive exam periods such as national testing rounds, university finals, or corporate certification events, every participant has a smooth, stable, and fair testing experience.

A Reliable Partner for High-Stakes, High-Concurrency Testing

Selecting the right testing platform goes beyond just features; it's an opportunity to build trust and ensure stability while effortlessly scaling. With its robust, high-concurrency infrastructure, Quilgo truly empowers organisations to conduct large-scale assessments confidently, without performance concerns.

Suppose your team is seeking a reliable platform that can handle over 10,000 concurrent tests while offering real-time reliability and explicit performance guarantees. In that case, Quilgo is the ideal partner to help you succeed!

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