Mini-Postgres: WAL + MVCC
A relational store with a visible write-ahead log. Press CRASH mid-transaction; restart; committed txns survive, uncommitted ones don't.
SIGNAL Database engine internals.
Engineering, instrumented
Interactive demos of the systems-engineering problems behind production-grade software. Each one models a real algorithm or production system — naming the system it mirrors and the invariant it proves. Projects show I can build products; this section shows I can solve hard engineering problems for other engineers.
Live
Visual Raft Consensus
5-node Raft cluster — kill nodes, partition the network, watch leader election + log replication unfold. Same algorithm as etcd, CockroachDB, Consul.
SIGNAL Distributed-state mastery; safety properties under failure.
OpenThe Dashboard (Observability)
Self-referential — instruments this very portfolio's AI endpoints. Live P50/P95/P99 + per-request span anatomy (Gantt-style). Click a trace, see the request's actual journey.
SIGNAL SRE/DevOps mindset. Tracing, sampling, percentile aggregation.
OpenRate-Limiter Showdown
Same request stream fed into four algorithms — Token Bucket, Leaky Bucket, Sliding Window, GCRA. Watch how Spike vs Steady traffic forks their decisions.
SIGNAL Backend infrastructure depth past first-Google-result.
OpenTCP Congestion Control
Reno, CUBIC, BBR running over identical lossy links. Drag LOSS up to 2% and Reno collapses while BBR holds.
SIGNAL Networking fundamentals — fits an ISP / fiber background.
OpenBloom Filter Playground
Insert items, watch bits flip; query and see hit/miss/false-positive. Live FP curve with k* marker.
SIGNAL Probabilistic data structures.
OpenSNMP Polling Lab
Small ISP topology with simulated SNMP agents. Inject faults; the alert engine fires, dedups, and parent-down-correlates the same way the LibreNMS transport on my resume does.
SIGNAL Network monitoring, SNMP semantics, alert correlation in real ISP environments.
OpenPlanned
CRDT Collab Sandbox
Two textareas synced across browser tabs via BroadcastChannel using a real RGA-style CRDT. Diverge offline, converge on reconnect.
SIGNAL Eventual consistency / collaboration architecture.
Consistent Hashing Ring
Add or remove a server — ~1/N of keys move (vs ~all on naive hash). Side-by-side with Rendezvous (HRW) hashing.
SIGNAL Sharding / cache routing — Cassandra, DynamoDB, every CDN.
Deferred
WebGPU Performance Benchmark
JS vs WebGL vs WebGPU compute. Reads as graphics-flex more than systems-flex; deferred.
Custom WASM VM
Compile a tiny DSL to bytecode + a stack VM with a mark-sweep GC. Enormous scope; overlaps with the existing polyglot sandbox.