Software Development
API Contracts and Status Codes for Order Processing
Document the request shape, response shape and expected errors for each endpoint. Practice with a paid order, a canceled order and a retried request.
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State Machines and Transitions for Order Processing
Define valid states and check each proposed transition against the current state. Practice with a paid order, a canceled order and a retried request.
Software Development
Retries and Duplicate Events for Order Processing
Use a stable event or request identifier to recognize previously handled work. Practice with a paid order, a canceled order and a retried request.
Software Development
SQL Queries and Reconciliation for Order Processing
Define the grain of a query and reconcile its output against known fixture totals. Practice with a paid order, a canceled order and a retried request.
Software Development
Unit and Integration Testing for Order Processing
Use isolated tests for decisions and integration tests for behavior across system boundaries. Practice with a paid order, a canceled order and a retried request.
Software Development
Debugging and Observability for Order Processing
Reproduce the issue, trace the request through each stage and record the first point where behavior differs. Practice with a paid order, a canceled order and a retried request.
Software Development
Code Review and Release Readiness for Order Processing
Review changes against requirements and run the affected checks before release. Practice with a paid order, a canceled order and a retried request.
Software Development
Requirements and Acceptance Tests for Support Ticket Systems
Translate a requirement into observable inputs, outputs and edge cases. Practice with five tickets including a missing owner and one unknown priority.
Software Development
Data Modeling and Relationships for Support Ticket Systems
Choose stable identifiers and represent relationships with explicit keys. Practice with five tickets including a missing owner and one unknown priority.
Software Development
Input Validation and Error Handling for Support Ticket Systems
Validate at the boundary and return a clear error before changing state. Practice with five tickets including a missing owner and one unknown priority.
Software Development
API Contracts and Status Codes for Support Ticket Systems
Document the request shape, response shape and expected errors for each endpoint. Practice with five tickets including a missing owner and one unknown priority.
Software Development
State Machines and Transitions for Support Ticket Systems
Define valid states and check each proposed transition against the current state. Practice with five tickets including a missing owner and one unknown priority.
Software Development
Retries and Duplicate Events for Support Ticket Systems
Use a stable event or request identifier to recognize previously handled work. Practice with five tickets including a missing owner and one unknown priority.
Software Development
SQL Queries and Reconciliation for Support Ticket Systems
Define the grain of a query and reconcile its output against known fixture totals. Practice with five tickets including a missing owner and one unknown priority.
Software Development
Unit and Integration Testing for Support Ticket Systems
Use isolated tests for decisions and integration tests for behavior across system boundaries. Practice with five tickets including a missing owner and one unknown priority.
Software Development
Debugging and Observability for Support Ticket Systems
Reproduce the issue, trace the request through each stage and record the first point where behavior differs. Practice with five tickets including a missing owner and one unknown priority.
Software Development
Code Review and Release Readiness for Support Ticket Systems
Review changes against requirements and run the affected checks before release. Practice with five tickets including a missing owner and one unknown priority.
Software Development
Requirements and Acceptance Tests for Learning Progress Systems
Translate a requirement into observable inputs, outputs and edge cases. Practice with two learners, three lessons and one repeated completion event.
Software Development
Data Modeling and Relationships for Learning Progress Systems
Choose stable identifiers and represent relationships with explicit keys. Practice with two learners, three lessons and one repeated completion event.
Software Development
Input Validation and Error Handling for Learning Progress Systems
Validate at the boundary and return a clear error before changing state. Practice with two learners, three lessons and one repeated completion event.
Software Development
API Contracts and Status Codes for Learning Progress Systems
Document the request shape, response shape and expected errors for each endpoint. Practice with two learners, three lessons and one repeated completion event.
Software Development
State Machines and Transitions for Learning Progress Systems
Define valid states and check each proposed transition against the current state. Practice with two learners, three lessons and one repeated completion event.
Software Development
Retries and Duplicate Events for Learning Progress Systems
Use a stable event or request identifier to recognize previously handled work. Practice with two learners, three lessons and one repeated completion event.
Software Development
SQL Queries and Reconciliation for Learning Progress Systems
Define the grain of a query and reconcile its output against known fixture totals. Practice with two learners, three lessons and one repeated completion event.