This task represents two streams of work:
1. The longer-term work associated with reducing #discussiontools' usage of the parser cache //and//
2. The near-term work of modifying the parser cache expiry to reduce its usage so the Editing Team can proceed with scaling #discussiontools features.
=== Plans
//This section contains the in-progress plan for reducing #discussiontools' usage of the parser cache.//
**Near-term plan of reducing parser cache usage**
|STEP[|DESCRIPTION|TICKET|STATUS
|---|---|---|---|---
|**Step 1.** | Verify #performance-team approves of plan to reduce parser cache retention time| |
|**Step 2.**| Pre-deployment: gather site performance baseline + threshold(s) | T280602|
|**Step 3.** |Deploy config change to reduce parser cache retention time | T280605|
|**Step 4a.**| Post-deployment: evaluate parser cache retention time adjustment on **site performance** | T280606|
|**Step 4b.**| Post-deployment: evaluate parser cache retention time adjustment on **parser cache utilization**. | T280604|
**Longer-term plan of decreasing #discussion-tools's usage of parser cache**
|Step|Description|Ticket|Notes
|---|---|---|---
| 1 | Avoid splitting parser cache on user language | T280295 |
| 2 | Avoid splitting parser cache on opt-out wikis | T279864 |
| 3 | Deploy to more wikis as opt-out | T275256 |