livecounter.org

What It Is

Live Counter is a real-time integer counter API for developers. It lets you increment counters via HTTP requests and continuously listen for count changes through Server-Sent Events (SSE). The example in the captured page uses it to display page views, but it can also be used for simple real-time counting scenarios beyond website traffic.

Core Capabilities and Technical Implementation

Its API design is very straightforward: counter resources are exposed at /counters/{counter-id}/. Sending a GET request with Accept: text/event-stream returns the current value and keeps the connection open for subsequent updates. Sending a POST request to the same resource increments the counter. The frontend example uses the browser-native EventSource API to listen for updates and jQuery to send the POST request. The underlying architecture mentions Fanout for handling HTTP streaming connections and Fastly for caching the latest value and Fanout instructions, making it feel more like a reference implementation for a real-time push-based counter.

Open Source, Self-Hosting, and Ecosystem

The page mentions that the server code is available, so self-hosting or secondary development should be possible. However, it does not show a license, repository address, deployment process, or operational requirements. Its ecosystem integration mainly revolves around standard HTTP and SSE, meaning any language capable of sending HTTP requests can use it, while browsers can directly use EventSource. That said, the page does not provide official SDKs, framework plugins, or more complete third-party integration documentation.

Pricing and Documentation

The captured content does not mention pricing, plans, payment methods, quotas, or SLA. The demo instance api.livecounter.org provides 9 counters numbered 1–9: counter 1 is used for the site’s own traffic, while counters 2–9 are available for testing. This makes it better suited for evaluation than for direct production use. The documentation is short but practical, with code examples for listening, incrementing, and embedding it into a page. Its shortcomings are the lack of details on authentication, error codes, rate limiting, data persistence, security, and deployment.

Pros, Cons, and Best-Fit Users

Its strengths are simplicity, an extremely lightweight API, and easy browser integration. It is suitable for page views, real-time likes, vote counts, small demos, or learning about SSE/Fanout/Fastly-style architectures. Its weaknesses are the lack of information around commercial support, production readiness, access control, and long-term maintenance. The source content does not provide information on accessibility from China, so network connectivity should be tested in practice. If production stability is a concern, consider building your own Redis/database-backed counter or evaluating alternatives such as Firebase, Supabase Realtime, Pusher, or Ably.