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RoadChain-SHA2048: c645c1292ab1555e
RoadChain-Identity: alexa@sovereign
RoadChain-Full: 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Alexa Amundson
2026-03-13 23:16:12 -05:00
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@@ -8,67 +8,40 @@ amundsonalexa@gmail.com | [github.com/blackboxprogramming](https://github.com/bl
## Summary
Database engineer managing 283 databases across 5 engines: 11 PostgreSQL, 230 SQLite (1.4 GB), 22 Cloudflare D1, 46 KV namespaces, and Qdrant vector DB. Designs schemas for AI agent memory, metrics collection, fleet state, and full-text search with FTS5.
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.
---
## Experience
### BlackRoad OS | Founder & Data Lead | 2025–Present
### BlackRoad OS | Founder & Database Engineer | 2025–Present
**PostgreSQL**
- 11 production databases across 3 fleet nodes (Alice, Cecilia, Lucidia)
- Application state for CECE API, Lucidia API, and fleet services
- Automated backup and monitoring
**The Decision: Why 5 Engines, Not 1**
- PostgreSQL (11 DBs) for relational data that needs ACID guarantees — user state, application data, fleet metadata
- SQLite (230 DBs, 1.4 GB) for embedded, zero-config storage — agent memory, metrics history, local state. No server process, instant access
- Cloudflare D1 (23 DBs) for serverless apps at the edge — data lives next to the Workers that query it. Millisecond reads globally
- KV (47 namespaces) for configuration and caching — edge-distributed, eventually consistent, perfect for feature flags and session data
**SQLite / FTS5**
- 230 SQLite databases (1.4 GB total) in ~/.blackroad/
- Key databases: metrics.db (6 tables), systems.db (111 entries), analytics.db, agents.db
- FTS5 full-text search index for code search across 354 repos
- Agent memory databases for AI conversation state
- Observability traces database with nanosecond-precision spans
**Cloudflare D1**
- 22 serverless databases (40 MB total) for edge applications
- images-blackroad: AI image generation metadata
- index-blackroad: code search index (2,524 files)
- blackroad-auth, blackroad-saas, blackroad-logs, and 17 more
**KV / Key-Value**
- 46 Cloudflare KV namespaces for edge state and configuration
- Agent inboxes, config, telemetry, templates, users, world state
- Low-latency edge reads for Cloudflare Workers
**Vector Database**
- Qdrant on Alice for semantic search and embeddings
- Knowledge retrieval for AI agent systems
**Schema Design**
- Metrics schema: metrics, counters, alerts, system_metrics, custom_metrics, metric_definitions
- Inventory schema: inventory, movements, locations
- Observability schema: traces, spans (parent-child), metrics, logs
- Dashboard schema: services, nodes, activity logs
**The Search: Finding Anything Instantly**
- FTS5 full-text search across 156,675 memory entries — the entire knowledge base searchable in under a millisecond
- Code search engine indexing 354 repos — find any function, any file, any pattern across the whole codebase
- 111 registered systems tracked in a systems database — every device, service, and endpoint has a record
---
## Technical Skills
**Databases:** PostgreSQL, SQLite, Cloudflare D1, KV stores, Qdrant
**Search:** FTS5 full-text search, vector similarity search
**Languages:** Python, SQL, JavaScript, Bash
**Infrastructure:** Linux, Docker, Cloudflare Workers
**Tools:** psql, sqlite3, Wrangler, custom CLI tools
PostgreSQL, SQLite/FTS5, Cloudflare D1, KV stores, Qdrant, SQL, Python, database design
---
## Metrics
| Metric | Value |
|--------|-------|
| Total databases | 283 |
| PostgreSQL DBs | 11 |
| SQLite DBs | 230 (1.4 GB) |
| D1 databases | 22 (40 MB) |
| KV namespaces | 46 |
| Systems tracked | 111 |
| Repos indexed | 354 |
| Metric | Value | Source |
|--------|-------|--------|
| PostgreSQL DBs | *live* | services.sh — psql -l via SSH |
| SQLite DBs | *live* | local.sh — find ~/.blackroad -name *.db |
| Total DB Rows | *live* | local.sh — sqlite3 row count across 230 DBs |
| D1 Databases | *live* | cloudflare.sh — wrangler d1 list --json |
| KV Namespaces | *live* | cloudflare.sh — wrangler kv list |
| FTS5 Entries | *live* | local.sh — sqlite3 FTS5 count |