Use branches and review boundaries
Git & collaboration · Shared foundation workshop · Explain a branch, review a change and merge only the intended work.
Existing companion · depth review pendingOpen collection →Read deeply.
Put your understanding to work.
Explore a topic as a collection of learning resources. Choose a chapter, work through a question, inspect the data or return to an explanation.
Explore the SQL reference collection →201 topic collections. Page 12 of 17. Existing companions are not automatically complete study units.
Recover a change without rewriting shared history
Git & collaboration · Shared foundation workshop · Distinguish a new reversing commit from discarding working edits.
Existing companion · depth review pendingOpen collection →Navigate paths and preserve source files
Command line & Linux · Shared foundation workshop · Reason about working directories, relative paths and reproducibility.
Existing companion · depth review pendingOpen collection →Read process outcomes and useful logs
Command line & Linux · Shared foundation workshop · Distinguish successful execution from successful analysis.
Existing companion · depth review pendingOpen collection →Separate DNS, transport and application failures
Command line & Linux · Shared foundation workshop · Use a layered troubleshooting explanation without probing live systems.
Existing companion · depth review pendingOpen collection →Validate an API response before analysis
HTTP, JSON & API contracts · Shared foundation workshop · Separate transport success from a valid response contract.
Existing companion · depth review pendingOpen collection →Plan bounded retries and idempotency
HTTP, JSON & API contracts · Shared foundation workshop · Identify which failures can safely be retried and which need a decision.
Existing companion · depth review pendingOpen collection →Document a minimal service contract
HTTP, JSON & API contracts · Shared foundation workshop · Describe inputs, outputs, limits and failure behavior clearly.
Existing companion · depth review pendingOpen collection →Test behavior with a known control
Testing & reproducibility · Shared foundation workshop · Write a test whose failure would change your confidence in the result.
Existing companion · depth review pendingOpen collection →Use failures to challenge assumptions
Testing & reproducibility · Shared foundation workshop · Make rejected inputs and failure messages part of the evidence.
Existing companion · depth review pendingOpen collection →Create an evidence-based README
Testing & reproducibility · Shared foundation workshop · Let another learner reproduce the result and understand its limits.
Existing companion · depth review pendingOpen collection →Enforce ownership on every private operation
Defensive secure development · Shared foundation workshop · Distinguish identity from permission to access a particular record.
Existing companion · depth review pendingOpen collection →One useful next step
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