Heartbeat
Heartbeat is a lightweight daemon that periodically checks the status of services and endpoints by sending requests (e.g., HTTP, TCP, ICMP) and reporting the results to an Elastic Stack for monitoring and alerting. It is part of the Elastic Stack (formerly ELK Stack) and is used to monitor uptime and availability of servers, websites, and network services. By collecting response times and status data, it helps detect outages, performance degradation, and connectivity issues in real-time.
Developers should use Heartbeat when they need to monitor the availability and responsiveness of web services, APIs, or network infrastructure in production environments, especially as part of a DevOps or SRE workflow. It is ideal for setting up uptime monitoring, SLA compliance tracking, and alerting on downtime, making it valuable for ensuring reliability in distributed systems, cloud applications, and microservices architectures. Learning Heartbeat is beneficial for roles involving system administration, cloud operations, or application performance monitoring.