Blog · Engineering notes

Turkey's top software engineers — technical writing from the production trenches.

Didivor Teknoloji engineering blog: in-depth pieces on microservice architecture, high-traffic systems, cloud & DevOps and AI/LLM Ops — not theory, but practices validated under load. Authored by Yavuz Ayhan Önder and the technical crew of one of Turkey's leading software firms.

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Architecture·Apr 12, 2026

Saga Pattern in Production: From Idempotency to Outbox

Six critical pitfalls running distributed transactions with saga, and how outbox + transactional inbox makes them genuinely scalable.

sagakafkapostgres
9 min
Performance·Apr 02, 2026

Cutting p99 Below 80ms: Rethinking Cache Strategy

Redis cluster, write-through, cache-stampede protection and request coalescing — the field-tested combo that tames tail latency.

redisp99caching
7 min
Cloud·Mar 24, 2026

Cutting K8s Cost 38%: Karpenter + Spot Mix

Replacing cluster autoscaler with Karpenter, spot bin packing and right-sizing — the anatomy of a $14k/month saving.

k8sawskarpenter
11 min
AI / LLM·Mar 18, 2026

Production RAG: Picking a Vector DB and Eval Discipline

pgvector vs Qdrant vs Weaviate, building a retrieval eval framework, and closing the live-user feedback loop.

ragpgvectoreval
10 min
Security·Mar 09, 2026

mTLS Service Mesh: A Pragmatic Path to Zero-Trust

Istio + SPIFFE for service identity, certificate rotation and a zero-downtime cutover into zero-trust architecture.

mtlsistiospiffe
6 min
Data·Feb 27, 2026

Eventual Consistency with CDC: Debezium + Kafka

Postgres-to-Kafka CDC, schema evolution, replay scenarios and downstream idempotency guarantees.

cdcdebeziumkafka
8 min
Architecture·Feb 12, 2026

From Modular Monolith to Microservices: Strangler Fig

Mapping an 8-year monolith into bounded contexts, applying anti-corruption layers, and a canary cutover.

monolithdddmigration
9 min
Performance·Jan 30, 2026

Postgres Index Strategy: Partial, BRIN and GIN

Picking the right index for your query pattern, leveraging covering indexes, and reading EXPLAIN ANALYZE like a pro.

postgresindexsql
5 min
Cloud·Jan 18, 2026

Cutting Deploy Lead Time to 12 Minutes with GitOps

ArgoCD vs Flux, progressive delivery, RBAC across multi-tenant clusters and secret management done right.

argocdgitopsci/cd
7 min