Chandan's Engineering Lab
Interactive in-browser prototypes proving systems engineering concepts in real time: token rate limiting, database scan vs. index complexity, JWT parsing, and cryptographic hashing.
1. Token-Bucket Rate Limiter
Simulates a Redis token-bucket rate limiter. Bucket capacity is 10 tokens. Test request throttling in real time.
2. Database Index Query Estimator
Calculates Big-O latency differences between Full Table Scans (O(N)) and Composite B-Tree Lookups (O(log N)) in PostgreSQL.
3. Safe Client-Side JWT Inspector
Decodes JWT headers and payload claims completely in your browser without sending sensitive tokens to any server.
4. WebCrypto SHA-256 Benchmark
Executes hardware-accelerated SHA-256 cryptographic digests using the browser's native `crypto.subtle` API.