Engineering Blog
Short, practical notes from the systems Z-SOFT builds and operates.
Distributed locks and leases: controlling concurrent ownership
Use leases, fencing tokens and idempotency to prevent stale workers from corrupting shared state.
From modular monolith to microservices: split at the right boundary
Use domain ownership, measurable pressure and an incremental strangler path instead of distributing complexity too early.
Make requests cheap before you auto scale
Keep requests lean, push side work onto a queue, and scale from demand signals that actually mean something.
Multi-tenant SaaS security: hold every boundary
Enforce tenant isolation across authorization, queries, storage and cache — never trust a single layer.
Write-behind: fewer database writes, same progress
Buffer frequent learning-progress updates in Redis and persist only the latest safe state.
Three-layer caching for multi-tenant SaaS
How CDN, Redis and versioned keys cut load without leaking one tenant's data into another's.
Every technology decision made today will have an impact for years to come.
Talk with the Z-SOFT team to assess your current state, define your goals and choose an architecture aligned with your business's growth direction.