Institute of Software Engineering

Engineering Tools Directory

Client-side calculators and interactive models for system design, career planning, and architecture.

Database Architecture Selector

Input your read/write ratio and data shape to determine the optimal database family (Relational, Document, Graph, Time-Series).

System Capacity Calculator

Back-of-the-envelope math calculator for system design interviews. Convert DAU to QPS and storage requirements.

Technical Debt Calculator

Quantify the cost of delayed refactoring by estimating hours lost to bugs and slower feature velocity.

API Latency Budget

Calculate your maximum allowable database query time to maintain a p99 SLA.

Cache Economics

Determine if adding Redis/Memcached is cost-effective based on compute savings vs cache instance costs.