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Emeka Chibuike

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Cloud data engineer at a Lagos oil and gas company, building IoT telemetry pipelines on GCP. Designed the streaming anomaly detection system that flags equipment faults 20 minutes before they cause downtime.

clouddatabasesbackendperformance

Articles by Emeka Chibuike(3)

Read replicas will not solve the problems you think they solve

Read replicas reduce load on the primary database. They do not fix slow queries, and they introduce replication lag that produces correctness bugs in applications that assume they are reading current data.

databasespostgresqlperformancebackend

21 July 2026

Building a personalised recommendation engine with embeddings

Embedding-based recommendation systems outperform collaborative filtering at cold-start and can be built entirely with open-source tools. This guide walks through the full pipeline: generating item and user embeddings, storing them in pgvector, and serving low-latency personalised recommendations in production.

embeddingsrecommendationsvector-searchpgvectorpersonalization

16 July 2026