Category: SaaS Architecture

Enforce tenant-prefixed Redis keys behind one cache wrapper and understand where shared-instance eviction still crosses tenant boundaries.

Choose shared or dedicated SaaS file storage, design tenant-scoped object keys, issue limited upload URLs, and enforce lifecycle and deletion rules.

Implement SaaS feature flags with global defaults, tenant overrides, deterministic evaluation, caching, audit history, and safe cleanup.

Design multi-tenant cache keys, invalidation, authorization boundaries, and per-tenant limits so cached data cannot leak between SaaS customers.

Design tenant-scoped soft deletes with deleted timestamps, filtered queries, uniqueness rules, restoration, retention, and permanent purge jobs.

Compare no-code, low-code, AI-assisted, and custom development for a SaaS application using practical criteria such as data, security, hosting, extensibility, and maintenance.

Design useful tenant-aware SaaS audit logs with actor, action, object, timestamp, result, source, safe change details, retention, and tamper protection.

Design SaaS queues and background workers that preserve trusted tenant context, enforce ownership, process retries safely, and prevent cross-tenant results.

Run repeatable SaaS database migrations across shared, sharded, or database-per-tenant systems with version tracking, compatibility, retries, and safe rollouts.

Detect and control noisy SaaS tenants with per-tenant metrics, quotas, concurrency limits, fair queues, query safeguards, and isolation tiers.