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Payment Microservice
I used this payment microservice to handle credit card and ach error messages from EPX, a payment provider. I also expanded the payment features to include: authenticate, capture, sale, reversal, void, refund, listing orders, and saving payment methods.
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Car Dealership RAG
A Retrieval Augmented Generation service for car inventory search, built in Rust with rig. Uses PostgreSQL with pgvector to combine structured SQL filtering with semantic vector search, preprocessing inventory into deterministic category summaries instead of clustering, and maintaining freshness through a stale-flag work queue drained by SKIP LOCKED workers.
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