tardis-machine/dist/http/healthCheck.js

Locally runnable server with built-in data caching, providing both tick-level historical and consolidated real-time cryptocurrency market data via HTTP and WebSocket APIs

const BYTES_IN_MB = 1024 * 1024;
export const healthCheck = (_, res) => {
    res.setHeader('Content-Type', 'application/json');
    try {
        const memUsage = process.memoryUsage();
        const message = {
            status: 'Healthy',
            uptimeHours: Number((process.uptime() / (60 * 60)).toFixed(2)),
            timestampMs: Date.now(),
            memoryInfo: {
                rssMB: Number((memUsage.rss / BYTES_IN_MB).toFixed(1)),
                heapTotalMB: Number((memUsage.heapTotal / BYTES_IN_MB).toFixed(1)),
                heapUsedMB: Number((memUsage.heapUsed / BYTES_IN_MB).toFixed(1)),
                externalMB: Number((memUsage.external / BYTES_IN_MB).toFixed(1))
            }
        };
        res.end(JSON.stringify(message));
    }
    catch {
        if (!res.finished) {
            res.statusCode = 500;
            res.end(JSON.stringify({
                message: 'Unhealthy'
            }));
        }
    }
};
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