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WASM Edge Computing: Monitoring & Analytics

WASM Edge Computing: Monitoring & Analytics

Part of: WASM Edge Computing User Guide

Real-Time Edge Health

use heliosdb_wasm::edge::analytics::EdgeAnalytics;


let analytics = EdgeAnalytics::new();


// Monitor all edge nodes
let health = analytics.get_edge_health().await?;


for node in health.nodes {
    println!("{}: {} (load: {:.1}%)",
        node.id,
        node.health_status,
        node.load_percentage(),
    );
}


// Alert on unhealthy nodes
if health.unhealthy_count > 0 {
    alert!("{} unhealthy nodes detected", health.unhealthy_count);
}

Latency Tracking

// Per-region latency
let latency_stats = analytics.get_latency_stats().await?;


for (region, stats) in latency_stats.by_region {
    println!("Region: {}", region.name());
    println!("  P50: {:.2}ms", stats.p50);
    println!("  P99: {:.2}ms", stats.p99);
    println!("  P99.9: {:.2}ms", stats.p999);
    println!("  Requests: {}", stats.request_count);
}


// Global latency heatmap
let heatmap = analytics.get_latency_heatmap().await?;
visualize_heatmap(&heatmap)?;

Cache Hit Rates

// Overall cache performance
let cache_stats = analytics.get_cache_performance().await?;


println!("=== Cache Performance ===");
println!("L1 hit rate: {:.1}%", cache_stats.l1_hit_rate * 100.0);
println!("L2 hit rate: {:.1}%", cache_stats.l2_hit_rate * 100.0);
println!("L3 hit rate: {:.1}%", cache_stats.l3_hit_rate * 100.0);
println!("Overall hit rate: {:.1}%", cache_stats.overall_hit_rate * 100.0);


// Per-key cache analysis
let hot_keys = cache.get_hot_keys(100)?;
for key_hash in hot_keys {
    println!("Hot key: {} (freq: {})", key_hash, frequency);
}

Error Rates

// Per-location error tracking
let error_stats = analytics.get_error_stats().await?;


for (region, stats) in error_stats.by_region {
    let error_rate = stats.errors as f64 / stats.total_requests as f64;


    println!("{}: {:.2}% errors ({}/{})",
        region.name(),
        error_rate * 100.0,
        stats.errors,
        stats.total_requests,
    );


    // Alert on high error rates
    if error_rate > 0.01 { // >1% errors
        alert!("High error rate in {}: {:.2}%", region.name(), error_rate * 100.0);
    }
}


// Error breakdown by type
for (error_type, count) in error_stats.by_type {
    println!("{}: {}", error_type, count);
}

Bandwidth Usage

// Monitor bandwidth consumption
let bandwidth = analytics.get_bandwidth_stats().await?;


println!("=== Bandwidth Usage ===");
println!("Total egress: {} GB", bandwidth.total_egress_gb);
println!("Cache savings: {} GB ({:.1}%)",
    bandwidth.cache_savings_gb,
    bandwidth.cache_savings_pct * 100.0,
);


// Per-region bandwidth
for (region, usage) in bandwidth.by_region {
    println!("{}: {} GB", region.name(), usage.egress_gb);
}


// Cost estimation
let cost = estimate_bandwidth_cost(&bandwidth)?;
println!("Estimated monthly cost: ${:.2}", cost);

Geographic Distribution

// Request distribution by region
let distribution = analytics.get_request_distribution().await?;


println!("=== Request Distribution ===");
for (region, count) in distribution.by_region {
    let percentage = count as f64 / distribution.total as f64 * 100.0;
    println!("{}: {} ({:.1}%)", region.name(), count, percentage);
}


// Visualize on map
let map = generate_distribution_map(&distribution)?;
map.render("distribution.png")?;

Custom Dashboards

// Export metrics to monitoring systems
use heliosdb_wasm::edge::analytics::MetricsExporter;


// Prometheus
let prometheus = MetricsExporter::prometheus();
prometheus.export_all(analytics).await?;


// Datadog
let datadog = MetricsExporter::datadog(api_key);
datadog.export_all(analytics).await?;


// CloudWatch
let cloudwatch = MetricsExporter::cloudwatch(region);
cloudwatch.export_all(analytics).await?;


// Custom webhook
let webhook = MetricsExporter::webhook("https://metrics.example.com");
webhook.export_all(analytics).await?;