# Glossary

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## Ticket Terms

<table><thead><tr><th width="235">Term</th><th>Definition</th></tr></thead><tbody><tr><td><strong>Backlog</strong></td><td>time span from ticket creation to an assignment to a contributor</td></tr><tr><td><strong>Pickup</strong></td><td>time spans from assignment to a contributor until its status changes to an in-progress stage</td></tr><tr><td><strong>Resolution</strong></td><td>time span from being in-progress until being marked as resolved/done etc.</td></tr><tr><td><strong>Lead Time</strong></td><td>Lifecycle of a ticket from creation to being done</td></tr><tr><td><strong>Throughput</strong></td><td>Number of items processed in time. E.g. number of tickets closed.</td></tr><tr><td><strong>Velocity</strong></td><td>Same as throughput. Often used in VSM/Flow frameworks.</td></tr><tr><td><strong>Capacity</strong></td><td>Throughput in achieving a goal, e.g., number of tickets successfully resolved in a sprint. Sustained achievable outcomes.</td></tr><tr><td><strong>Overloaded</strong></td><td>Beyond a pre-defined capacity. For instance a contributor has more than a certain healthy number of tasks assigned.</td></tr><tr><td><strong>Sprint Overrun</strong></td><td>Defined per ticket. A ticket overruns a sprint if it is not resolved in the initially assigned sprint.</td></tr><tr><td><strong>Unplanned Work</strong></td><td>Defined per ticket. A ticket is unplanned if it is added to a sprint after the initial sprint start date.</td></tr><tr><td><strong>Slow Response</strong></td><td>Defined per ticket. A ticket that has been assigned but has not been moved to in-progress for more than a pre-defined time.</td></tr><tr><td><strong>Unassigned WIP</strong></td><td>Defined per ticket. A ticket that has been moved to a work-in-progress (WIP) state, but is not assigned to anyone</td></tr><tr><td><strong>Long Running WIP</strong></td><td>Defined per ticket. A ticket that has been moved to an in-progress state, but has not been closed in a pre-defined time.</td></tr></tbody></table>

## Code & Pull Request (PR) Terms

<table><thead><tr><th width="235">Term</th><th>Definition</th></tr></thead><tbody><tr><td><strong>Development</strong></td><td>time from first commit to opening the PR</td></tr><tr><td><strong>Response</strong></td><td>time from opening the PR to start of a review</td></tr><tr><td><strong>Review</strong></td><td>time from first review response to approval of the PR</td></tr><tr><td><strong>Integration</strong></td><td>time from approval of the PR until its merge/closure</td></tr><tr><td><strong>Cycle Time</strong></td><td>Lifecycle of a PR from creation to being merged/closed.</td></tr><tr><td><strong>Throughput</strong></td><td>Number of items processed in time. E.g.: number of PRs merged.</td></tr><tr><td><strong>Velocity</strong></td><td>Same as throughput. Often used in VSM/Flow frameworks.</td></tr><tr><td><strong>Capacity</strong></td><td>Throughput in achieving a goal, e.g., number of PRs reviewed in a sprint. Sustained achievable outcomes.</td></tr><tr><td><strong>Overloaded</strong></td><td>Beyond a pre-defined capacity. For instance a contributor has more than a certain healthy number of PRs open in parallel.</td></tr><tr><td><strong>Non-Productive Work</strong></td><td>Defined per PR. A PR that has been opened but does not make it into the product, i.e., gets closed or abandoned without merging.</td></tr><tr><td><strong>Merged Outside Process</strong></td><td>Defined per PR. A PR is merged without being reviewed or approved.</td></tr><tr><td><strong>Stale</strong></td><td>Defined per PR. A PR has been opened but did not progress from one stage to another in a pre-defined time.</td></tr><tr><td><strong>Long Running WIP</strong></td><td>Defined per PR. A PR that has been opened but not merged in a pre-defined time.</td></tr><tr><td><strong>Risky Change</strong></td><td><p>A PR that meets one of the following criteria:</p><ul><li>More than 100 LoC changed, or</li><li>The PR contains more than 10 commits, or</li><li>The PR touches on more than 10 files.</li></ul></td></tr><tr><td><strong>Complex Review</strong></td><td><p>A PR that meets one of the following criteria:</p><ul><li>It attracted more than 10 review comments, or</li><li>It went already through more than 1 review cycle, or</li><li>It has more than 1 additional reviewer being active on it.</li></ul></td></tr><tr><td><strong>New Work</strong></td><td>New code being committed that does not change existing code.</td></tr><tr><td><strong>Rework Own</strong></td><td>Changes to code less than 3 weeks old, that had been committed by the same developer.</td></tr><tr><td><strong>Rework Others</strong></td><td>Changes to code less than 3 weeks old, that had been committed by a different developer.</td></tr><tr><td><strong>Maintenance code</strong></td><td>Changes to code older than 3 weeks.</td></tr></tbody></table>