Ialert API Monitoring System: Design and Implementation for Real-Time Interface Health Checks

In the ad‑network business, the ad‑delivery interface processes billions of page views daily across multiple data centers; testing can reveal issues such as interface instability causing timeouts, manual WAR deployment omissions, delayed detection of service crashes, cross‑data‑center latency measurement, and downstream service failures.

Beyond resource‑level monitoring, monitoring the interfaces themselves is essential because interface anomalies often require more time and effort to troubleshoot than service failures.

Three solution approaches are discussed: (1) writing Python or shell scripts to filter logs and generate alerts – low cost but limited to script‑savvy users and hard to maintain; (2) using open‑source monitoring tools like Zabbix – free and easy to start, but deep custom requirements demand extensive development; (3) developing a custom solution with Apache HttpClient and Quartz, which sends scheduled requests, processes responses, logs results, and triggers email alerts, forming the Ialert monitoring system.

The Ialert system is built on an SSM (Spring‑SpringMVC‑MyBatis) web architecture, integrating HttpClient for HTTP calls, Quartz for scheduling, and JavaMail for notifications. Interface correctness is evaluated by response status code, content, and latency, with optional assertions; a web UI lets users add APIs and start monitoring with a single click, requiring no coding.

Currently, Ialert runs in the alliance business group, providing 24/7 business‑level monitoring, email alerts, performance visibility, and rapid detection of cross‑data‑center service outages.

Future work includes handling dynamic tokens, encrypted communication for mobile‑server interactions, richer request/response validation, and finer‑grained assertions to cover more complex monitoring scenarios.