SaaSRelease Rings Compatibilidade, Canários e Rollback por Tenant

O que está incluído

• Application, service, API, worker, UI, mobile/SDK, schema and configuration component registry
• Artifact/version/digest and source pipeline reference
• Dependency graph required/minimum/maximum compatible versions
• API and event schema compatibility declaration
• Database migration expand/backfill/switch/contract phases
• Migration reversibility class reversible, forward-fix or restore-required
• Tenant state current component/config/schema versions
• Release train, change set, owner, risk and target window
• Change type feature, fix, security, infrastructure, schema or deprecation
• Required approvals based on risk/reversibility
• Ring definitions internal, synthetic, pilot, early access, regional and general
• Tenant cohort rule explicit and snapshot before rollout
• No cohort based on protected end-user trait
• Customer opt-in/opt-out only within contract/security constraints
• Maintenance window and timezone/DST handling
• Prerequisite checker capacity, integration, version and data state
• Ineligible tenant excluded with reason and remediation
• Feature flag owner, purpose, default, expiry and cleanup issue
• Flag evaluation includes tenant, environment and version context
• Exposure event sampled without personal payload
• Mutually exclusive experiment assignment where configured
• No experimentation on high-impact end-user decision without separate governance
• Canary deployment and tenant exposure distinguished
• Health gate technical SLO, business invariant and support signal
• Baseline/window/threshold and data freshness visible
• Automated gate may pause; irreversible advance requires configured human authority
• Step percentage/count and soak duration per ring
• Regional sequencing and dependency capacity check
• Tenant-aware migration queue with concurrency and lock
• Per-tenant migration checkpoint and idempotency
• Failed tenant quarantined without blocking safe cohorts where approved
• Backward-compatible read/write period
• Rollback plan by service, flag, configuration and tenant schema state
• Rollback eligibility checked before execution
• Forward-fix path when data migration cannot roll back
• Customer communication draft, approval, audience and delivery status
• Security emergency path with shortened approvals and retrospective review
• Release status planned/approved/running/paused/failed/rolled-back/completed
• Freeze and collision detection across shared component
• Evidence artifact-plan-approvals-cohort-gates-exposure-migrations-outcome
• Post-release verification and flag/schema cleanup deadline
• Dashboard ring progress, tenant exceptions, gate health and compatibility debt
• Pilot for fifteen services, four rings, two regions and fifty tenants