LoadTester

LoadTester is a modern, cloud-native HTTP and API load testing tool designed for engineering teams that need fast, repeatable performance checks without the overhead of managing infrastructure. Built by Cloud Native d.o.o., LoadTester allows developers to create, launch, and monitor load tests directly from a browser or through a CI/CD pipeline, with zero infrastructure to provision or maintain. The platform supports up to 10,000 virtual users and 10,000 requests per second, with a cold start time of under three seconds to the first request. It is built for teams who want simple, reliable performance testing that integrates seamlessly into their existing workflows. The tool provides live analytics during test runs, including throughput, latency distributions (p50, p95, p99), error rates, and active user counts. After a test completes, users can review detailed results, export data in PDF, CSV, or JSON formats, compare runs side by side to catch performance regressions, and set automated thresholds that stop tests on failure or latency breaches. LoadTester also includes scheduled tests, webhooks, Slack and email alerts, and API access for teams that need automated, repeatable performance checks as part of their deployment process. It is ideal for developers, QA engineers, SREs, and platform teams who want to prove capacity before launch, monitor performance after every deploy, and ensure their applications remain fast and reliable under load.

Instant Distributed Execution

Start distributed load tests in seconds with no infrastructure setup required. LoadTester automatically dispatches workers and scales them based on your test configuration, so you never have to worry about orchestrating servers, managing queues, or scheduling resources. The system boots in under three seconds and begins sending requests immediately, allowing your team to focus on analyzing results rather than managing execution flow.

Live Real-Time Analytics

Watch requests, latency, failures, throughput, and bottlenecks update in real time while your test is running. The live dashboard displays key metrics including requests per second, p50, p95, and p99 latency, error counts, and active virtual users. A latency distribution chart shows performance trends over the last 60 seconds, helping you identify issues as they happen rather than waiting for a post-run report.

Smart Auto-Stop with Thresholds

Set failure or latency thresholds that automatically stop tests when things go sideways. You can define rules for maximum p95 latency, maximum error rate, and regression against a baseline run. When a threshold is breached, LoadTester can auto-stop the test and notify your team via Slack, email, or a webhook. This prevents wasted resources and ensures that failing tests are caught immediately.

CI/CD Integration and Automation

Run load tests on every deploy directly from your CI/CD pipeline. LoadTester provides a simple API and webhook integrations that allow you to trigger tests automatically as part of your release process. You can schedule nightly baseline tests, set up release gates that block deployments if performance degrades, and receive alerts when thresholds are breached. The platform also supports exporting results in PDF, CSV, and JSON formats for easy sharing with your team.

Pre-Release Capacity Validation

Before launching a new feature or product update, engineering teams need to prove that their application can handle expected traffic. LoadTester allows you to simulate realistic user loads against your staging or production endpoints, monitor latency and error rates in real time, and validate that your system meets performance SLOs. If thresholds are breached, the test stops automatically, and your team gets notified before the release goes live.

Continuous Performance Monitoring in CI/CD

Integrate load testing directly into your deployment pipeline to catch performance regressions before they reach users. With LoadTester, you can trigger a short baseline test on every pull request or merge to main. The platform compares results against previous runs, alerts your team if p95 latency increases by more than a set percentage, and blocks the deployment if thresholds are violated. This ensures that every change is performance-verified.

API Endpoint Stress Testing

Identify the breaking point of critical API endpoints by gradually increasing load until thresholds are breached. LoadTester supports both virtual user mode and requests-per-second mode, allowing you to simulate realistic traffic patterns. The live dashboard shows exactly when latency spikes or errors increase, helping you pinpoint bottlenecks in your application code, database queries, or third-party dependencies.

Scheduled Baseline and Regression Testing

Set up daily or weekly scheduled tests that run automatically and compare results against a stored baseline. LoadTester tracks performance trends over time, so you can see if your application is getting slower after each deploy or infrastructure change. The platform sends alerts if a run shows significant regression, and you can review detailed run-to-run comparisons in the console to identify the exact change that caused the degradation.

How do I start a load test with LoadTester?

Creating a load test is simple. From the dashboard, click New Test, give it a name, choose the HTTP method (GET, POST, PUT, DELETE), enter your target URL, select either virtual users or requests per second mode, and set the rate and duration. Then click Launch, and LoadTester automatically dispatches distributed workers and begins sending requests within seconds. You can watch the live analytics stream in real time.

Does LoadTester require any infrastructure setup?

No. LoadTester is a fully managed platform that handles all infrastructure coordination, worker scaling, and execution flow. You do not need to provision any servers, configure load generators, or manage queues. Simply create your test from the browser or API, and the platform handles the rest. This makes it ideal for teams that want to focus on performance testing rather than infrastructure management.

Can I integrate LoadTester with my CI/CD pipeline?

Yes. LoadTester provides a simple REST API and webhook integrations that allow you to trigger tests automatically from your CI/CD pipeline. You can run tests on every deploy, set up release gates that block deployments if performance degrades, and receive Slack or email alerts when thresholds are breached. The platform also supports exporting results in PDF, CSV, and JSON formats for easy sharing.

What metrics can I monitor during a live test?

During a live test, LoadTester displays real-time metrics including requests per second, p50, p95, and p99 latency, total requests sent, error count and rate, active virtual users, and data sent and received. A latency distribution chart shows performance trends over the last 60 seconds. After the test completes, you can review a detailed summary with all these metrics plus run-to-run comparisons against previous baselines.