tech calculator
Load Balancer Capacity & Concurrency Planner
Estimate peak active TCP connections, SSL handshake capacity, and bandwidth requirements under peak load balancer traffic.
Inputs
Peak Ingress Workload
Connection persistence
Cryptographic Cipher
Results
Active Concurrent Sessions
150,000
TCP Socket Memory Size
2.29 GB
Formula
Load Balancer Capacity formula
Active TCP = Peak RPS × KeepAlive_Sec | Bandwidth_Gbps = ( RPS × Size_KB × 8 ) / 10^6Computes active session limits and models asymmetric key cryptographic CPU bottlenecks for SSL handshakes.
Step by step
How the calculation works
- 1Define the peak application request rate (RPS) and average response payload size (KB).
- 2Configure HTTP Keep-Alive persistence timeout (longer times preserve SSL handshakes but scale TCP table sizes).
- 3Specify new TLS handshake rates and choose the cryptographic cipher (RSA vs ECDSA).
- 4Evaluate network bandwidth requirements, TCP socket memory footprints, and cryptographic CPU core limits.
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