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Alexa Amundson
ec7b1445b5
RoadChain-SHA2048: c645c1292ab1555e RoadChain-Identity: alexa@sovereign RoadChain-Full: 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
48 lines
2.0 KiB
Markdown
48 lines
2.0 KiB
Markdown
# Alexa Amundson
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**Database Engineer**
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amundsonalexa@gmail.com | [github.com/blackboxprogramming](https://github.com/blackboxprogramming)
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---
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## Summary
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Different data needs different storage. Designed and operate 283 databases across 5 engines — PostgreSQL for transactions, SQLite for embedded state, D1 for serverless, KV for edge config, Qdrant for vectors. Each one chosen for a reason.
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---
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## Experience
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### BlackRoad OS | Founder & Database Engineer | 2025–Present
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**The Decision: Why 5 Engines, Not 1**
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- PostgreSQL (11 DBs) for relational data that needs ACID guarantees — user state, application data, fleet metadata
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- SQLite (230 DBs, 1.4 GB) for embedded, zero-config storage — agent memory, metrics history, local state. No server process, instant access
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- Cloudflare D1 (23 DBs) for serverless apps at the edge — data lives next to the Workers that query it. Millisecond reads globally
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- KV (47 namespaces) for configuration and caching — edge-distributed, eventually consistent, perfect for feature flags and session data
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**The Search: Finding Anything Instantly**
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- FTS5 full-text search across 156,675 memory entries — the entire knowledge base searchable in under a millisecond
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- Code search engine indexing 354 repos — find any function, any file, any pattern across the whole codebase
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- 111 registered systems tracked in a systems database — every device, service, and endpoint has a record
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---
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## Technical Skills
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PostgreSQL, SQLite/FTS5, Cloudflare D1, KV stores, Qdrant, SQL, Python, database design
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---
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## Metrics
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| Metric | Value | Source |
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| PostgreSQL DBs | *live* | services.sh — psql -l via SSH |
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| SQLite DBs | *live* | local.sh — find ~/.blackroad -name *.db |
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| Total DB Rows | *live* | local.sh — sqlite3 row count across 230 DBs |
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| D1 Databases | *live* | cloudflare.sh — wrangler d1 list --json |
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| KV Namespaces | *live* | cloudflare.sh — wrangler kv list |
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| FTS5 Entries | *live* | local.sh — sqlite3 FTS5 count |
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