v0.34.12

docs/DASHBOARD.md

@@ -32,6 +32,16 @@ Unfinished editors may be minimized into a draft dock; this is a UI convenience
 
 **Configuration history** stores retained validated snapshots. Restoring a snapshot creates a new configuration revision. It does not restore every filesystem file, external certificate, Secret Store key or accumulated cache/log history. For disaster recovery, use a full encrypted backup; see [Backup](BACKUP.md).
 
+## Optional X/Y scales
+
+Under **Settings → Appearance → Charts**, turn on **Show X/Y scales on charts**. It is **off by default**, stored per administrator through `chart_axes: true|false` in `/api/preferences`, and can be reset with **Reset section** or **Reset appearance**. No routing or persistent metric collection changes are required. The optional labels cover sampled SVG line charts in Overview (including backend, cache, Web Server, Stream and optional extra panels), Vhosts, Docker Vhosts, Streams, Web Server live metrics, Cache and Transform activity. Donuts, progress meters and categorical breakdowns have no X/Y sample axes.
+
+- **Y:** `0` through the exact range used to plot the series, using suitable units such as `%`, `ms`, `B`, `B/s` or `/s`. Existing auto-ranging, fixed 0–100% scales and adaptive Vhost/Docker percentile scales are **not recalculated or replaced**. If an isolated Vhost peak is clipped, its actual maximum remains in the legend and the scale annotation identifies the clipped range. On HTTP and WebSocket protocol mini charts where each line is independently normalized, separate Y ranges for H1/H2/H3 are shown rather than an incorrect shared axis.
+- **X:** numbers **1 ... N** identify samples in the displayed history, not elapsed seconds or minutes. Sampling can pause and Vhost/Docker/Stream lifetime histories can compact older readings into buckets. The X axis never pretends that sample spacing is uniform time.
+- Labels are HTML overlays/footers rather than SVG text so they remain legible with `preserveAspectRatio="none"`. The original SVG path geometry, visible data, styling and refresh rates are unchanged. Switching axes off unwraps the existing SVGs; charts return to their previous appearance without restarting the panel.
+
+If axis labels look crowded in a small card or on mobile, disable the setting; the default presentation is unchanged.
+
 ## Interpreting charts
 
 - The **Cache hit ratio** donut shows cumulative `HIT / (HIT + MISS)`: BYPASS and requests outside cache are deliberately excluded from its denominator.