# Design Patterns

> Reusable Workflow and Activity patterns for common orchestration problems.

- [Temporal Design Patterns](https://docs.temporal.io/design-patterns.md)
- [Activity Dependency Injection](https://docs.temporal.io/design-patterns/activity-dependency-injection.md)
- [Approval Pattern](https://docs.temporal.io/design-patterns/approval.md)
- [Batch Iterator](https://docs.temporal.io/design-patterns/batch-iterator.md)
- [Batch Processing Patterns](https://docs.temporal.io/design-patterns/batch-processing-patterns.md)
- [Child Workflows Pattern](https://docs.temporal.io/design-patterns/child-workflows.md)
- [Continue-As-New Pattern](https://docs.temporal.io/design-patterns/continue-as-new.md)
- [Delayed Callback (Webhooks)](https://docs.temporal.io/design-patterns/delayed-callback.md)
- [Delayed Retry](https://docs.temporal.io/design-patterns/delayed-retry.md)
- [Delayed Start Pattern](https://docs.temporal.io/design-patterns/delayed-start.md)
- [Distributed Transaction Patterns](https://docs.temporal.io/design-patterns/distributed-transaction-patterns.md)
- [Downstream Rate Limiting](https://docs.temporal.io/design-patterns/downstream-rate-limiting.md)
- [Eager Workflow Start](https://docs.temporal.io/design-patterns/eager-workflow-start.md)
- [Early Return (Update with Start)](https://docs.temporal.io/design-patterns/early-return.md)
- [Early Return + Local Activities](https://docs.temporal.io/design-patterns/early-return-local-activities.md)
- [Entity & Lifecycle Patterns](https://docs.temporal.io/design-patterns/entity-lifecycle-patterns.md)
- [Entity Workflow Pattern](https://docs.temporal.io/design-patterns/entity-workflow.md)
- [Error Handling & Retry Patterns](https://docs.temporal.io/design-patterns/error-handling-patterns.md)
- [Event Accumulator Pattern](https://docs.temporal.io/design-patterns/event-accumulator.md)
- [External Interaction Patterns](https://docs.temporal.io/design-patterns/external-interaction-patterns.md)
- [Fairness](https://docs.temporal.io/design-patterns/fairness.md)
- [Fan-Out with Child Workflows](https://docs.temporal.io/design-patterns/fanout-child-workflows.md)
- [Fast/Slow Retries](https://docs.temporal.io/design-patterns/fast-slow-retries.md)
- [Fixed Count of Retries](https://docs.temporal.io/design-patterns/fixed-count-retries.md)
- [Fixed Wall-Time Retries](https://docs.temporal.io/design-patterns/fixed-wall-time-retries.md)
- [Local Activities](https://docs.temporal.io/design-patterns/local-activities.md)
- [Long-Running Activity - Tracking Progress and Handling Cancellation with Heartbeats](https://docs.temporal.io/design-patterns/long-running-activity.md)
- [MapReduce Tree](https://docs.temporal.io/design-patterns/mapreduce-tree.md)
- [Non-Retryable Errors](https://docs.temporal.io/design-patterns/non-retryable-errors.md)
- [Parallel Execution](https://docs.temporal.io/design-patterns/parallel-execution.md)
- [Performance & Latency Patterns](https://docs.temporal.io/design-patterns/performance-latency-patterns.md)
- [Pick First Pattern](https://docs.temporal.io/design-patterns/pick-first.md)
- [Polling External Services](https://docs.temporal.io/design-patterns/polling.md)
- [Priority Task Queues](https://docs.temporal.io/design-patterns/priority-task-queues.md)
- [QoS & Throughput Patterns](https://docs.temporal.io/design-patterns/qos-throughput-patterns.md)
- [Request-Response via Updates](https://docs.temporal.io/design-patterns/request-response-via-updates.md)
- [Resumable Activity (AKA Pause On Failure)](https://docs.temporal.io/design-patterns/resumable-activity.md)
- [Retry Alerting via Metrics](https://docs.temporal.io/design-patterns/retry-metrics.md)
- [Saga Pattern](https://docs.temporal.io/design-patterns/saga-pattern.md)
- [Signal with Start Pattern](https://docs.temporal.io/design-patterns/signal-with-start.md)
- [Sliding Window](https://docs.temporal.io/design-patterns/sliding-window.md)
- [Task Orchestration Patterns](https://docs.temporal.io/design-patterns/task-orchestration-patterns.md)
- [Updatable / Debounced Timer Pattern](https://docs.temporal.io/design-patterns/updatable-timer.md)
- [Worker Configuration Patterns](https://docs.temporal.io/design-patterns/worker-configuration-patterns.md)
- [Worker-Specific Task Queues Pattern](https://docs.temporal.io/design-patterns/worker-specific-taskqueue.md)
- [Workflow Messaging Patterns](https://docs.temporal.io/design-patterns/workflow-messaging-patterns.md)