DNS Propagation Time Estimator
You changed the A record. Singapore still sees the old IP. Model propagation across 8 resolver populations —Google DNS, Cloudflare, Quad9, OpenDNS, and ISP defaults. TTL, cache policy, and geography all factored in.
Resolver-by-Resolver Timing Model →AWS Egress Cost Estimator
25 TB out. $0.09/GB. $2,250/month before you've served a single request. Model the data-transfer death spiral before your architecture locks you in.
Egress Cost Projector →Concurrent Users →Bandwidth
5K users, 2 Mbps each = 10 Gbps origin pipe. Before the CDN edge, before the load balancer. Size the origin or watch it crumple under launch-day traffic.
Users →Bandwidth Modeler →CDN Edge Offload
10M requests. 90% cached = 9M from edge, 1M hit origin. Every cache-hit percentage point is dollars. Model the savings curve.
CDN Offload Calculator →VPN Throughput Degradation
WireGuard: 4.2% overhead. IPsec: 8—5%. OpenVPN TCP: up to 30% from TCP-over-TCP retransmission catastrophe. Pick the protocol, pay the tax.
VPN Degradation Analyzer →Streaming Bandwidth & CDN Cost
10K viewers × 6 Mbps 1080p HLS × 2.5× peak factor = 150 Gbps. Model the multi-bitrate ladder, protocol overhead, and monthly egress cost across 5 CDNs. The math that decides whether your live event budget works.
Streaming Bandwidth Calculator →ALB vs NLB Cost →Per LCU
Model AWS Application vs Network Load Balancer monthly cost by LCU: new connections, active connections, bandwidth, rule evaluations. You pay for the max dimension, not the sum. See ALB vs NLB head to head.
ALB / NLB Cost Engine →