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Release p1-batch: session cache cap 300→100 (#6362) + virtualization comment (#6318) (#6375)

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* perf(transcript): enable DOM virtualization by default (re-enable #4346 fix) (#6151) (#6155)

* fix: revert DOM virtualization default to opt-in, fix gate RED (#6155)

* fix(#6351): lower default session cache cap

* Release p1-batch: session cache cap 300->100 (#6362) + virtualization comment (#6318)

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Co-authored-by: webtecnica <75556242+webtecnica@users.noreply.github.com>
Co-authored-by: webtecnica <webtecnica@users.noreply.github.com>
Co-authored-by: Rod Boev <rod.boev@gmail.com>
Co-authored-by: nesquena-hermes <agent@nesquena-hermes>
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nesquena-hermeswebtecnicawebtecnicaRod Boevnesquena-hermes
 authored and GitHub committed 2026-07-21 02:53:43 +00:00
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README.md
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@@ -373,7 +373,7 @@ Full list of environment variables:
| `HERMES_CONFIG_PATH` | `$HERMES_HOME/config.yaml` | Path to Hermes config file |
| `HERMES_WEBUI_SERVER_CWD` | *(unset)* | Working directory for the server process. Defaults to the agent dir; point it at a writable workspace when the agent dir is read-only so fallback relative writes land somewhere writable |
| `HERMES_WEBUI_AGENT_CACHE_MAX` | `25` | Max live agent instances kept warm in the in-memory LRU. Each pins a full conversation transcript, so this is the dominant lever on resident memory — lower it on installs with many long sessions to cap RAM (at the cost of more cold reloads) |
| `HERMES_WEBUI_SESSIONS_MAX` | `300` | Legacy operator override for the max compact `Session` objects held in the in-memory LRU. Prefer the `webui.sessions_cache_max` key in `config.yaml` (which takes precedence); this env var remains a fallback. Bounds resident memory so long-running installs cannot accumulate every session ever touched and eventually crash (#4765/#2233/#4633). Eviction only ever drops clean, persisted, non-active sessions — an evicted session lazily reloads from its JSON sidecar on next access |
| `HERMES_WEBUI_SESSIONS_MAX` | `100` | Legacy operator override for the max compact `Session` objects held in the in-memory LRU. Prefer the `webui.sessions_cache_max` key in `config.yaml` (which takes precedence); this env var remains a fallback. Bounds resident memory so long-running installs cannot accumulate every session ever touched and eventually crash (#4765/#2233/#4633). Eviction only ever drops clean, persisted, non-active sessions; an evicted session lazily reloads from its JSON sidecar on next access |
Extension deployments can inspect sanitized, authenticated diagnostics at `GET /api/extensions/status`; see [WebUI Extensions](docs/EXTENSIONS.md#diagnostics).