Engineering decisions.
Explained in practice.
Practical guides to reliable systems, from tenant isolation and integrations to AI retrieval and product operations.
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Reliable Salla delivery promises: cutoffs, calendars and zones
A production design for turning Salla delivery-promise settings into versioned, testable checkout commitments without confusing them with carrier tracking.
Salla OAuth refresh tokens: rotate once, recover safely
A production design for Salla OAuth token refresh that prevents concurrent reuse, stores each rotation atomically and handles uncertain network outcomes safely.
Qdrant hybrid search: fuse meaning, terms and tenant scope
A production design for dense and sparse retrieval in Qdrant, from candidate generation and fusion to tenant filters, reranking and evaluation.
Claude prompt caching: stable prefixes that actually hit
A production guide to Claude prompt caching: prefix design, breakpoints, TTLs, invalidation, diagnostics and the metrics that prove a real cache hit.
Safe Kubernetes rollouts: readiness, draining and PDB limits
A practical Kubernetes deployment guide connecting readiness, graceful shutdown and disruption budgets to customer operations that must survive a release.
Build a cryptographic inventory for Saudi post-quantum readiness
SAMA requires Saudi financial institutions to identify and classify cryptographic assets by Q4 2026. This is an engineering plan for doing it well.
Cloudflare K2 changes the trade-offs of event streaming
K2 builds a durable serverless log on object storage. Here is what its batching, leases and at-least-once delivery mean in production.
Measure reliability at the user journey, not the server
Turn a critical user journey into an SLO, an error budget and a release gate that joins frontend experience with backend correctness.
Zid storefront analytics: build an event contract you can trust
Turn Zid storefront events into dependable product analytics with one versioned schema, idempotent delivery, identity stitching and order reconciliation.
Claude Sonnet 5.5: migrate the workflow, not just the model
Claude Sonnet 5.5 changes thinking, tool choice and response handling. Here is a production migration and routing plan grounded in real task economics.
Design onboarding around the first value moment
Replace forced product tours with a resumable path to one meaningful result, supported by contextual help, saved progress and outcome evidence.
Salla product variants: migrate the schema, not rows
Changing a Salla option can reshape every sellable variant. Use stable identity, shadow validation and reconciliation before writing prices or stock.