Performance

What the Performance page does

The Performance page gives you two front-end speed controls that apply to both the admin panel and the client panel at once. Page Prefetching quietly downloads the rest of the interface in the background so later navigations feel instant, and API Response Caching briefly reuses recently loaded data so revisiting a page does not always wait on a fresh request. Both are turned on by default and are safe to leave as they are.

How to reach it

1. Open the Settings page from the admin sidebar.
2. In the settings menu on the left, scroll to the Performance group.
3. Select Performance (the lightning-bolt item). The panel opens with a Performance Optimization heading and a Save button in the top-right corner.

These settings live in the admin panel, but they govern the experience in both panels. There is no separate Performance page inside the client panel — whatever you set here is what your customers get too.

Page Prefetching

The first card controls how the interface loads its own screens. With Enable Page Prefetching switched on, the panel waits until the first page has finished loading, then downloads every other screen's code in the background. Because the screens are already in the browser by the time someone clicks a menu item, the next page appears immediately instead of pausing to fetch its code.

1. Toggle Enable Page Prefetching on or off.
2. Click Save in the header.
3. The change takes effect on the next page load.

Prefetching only preloads the interface's own screens — it never preloads or alters your live billing data, and it has no effect on how fresh that data is. Leave it on for fast office or data-center connections. Consider turning it off only for very slow or metered links, where downloading everything up front would waste bandwidth that a visitor may never use.

API Response Caching

The second card controls how often the panel re-fetches data it has already loaded. With Enable API Caching switched on, recently loaded read-only data (the kind shown on list and detail screens) is kept in memory for a short window. If someone returns to a page within that window, it renders instantly from the stored copy instead of waiting on a new request. Once the window passes, the next visit fetches fresh data, so information is never older than the window you set.

1. Toggle Enable API Caching on or off.
2. When caching is on, a Cache TTL (milliseconds) field appears beneath the toggle.
3. Type how long, in milliseconds, cached data should stay fresh. The equivalent value in seconds is shown in parentheses next to the field as you type (for example, 5000 shows as (5.0s)).
4. Click Save.

The Cache TTL field accepts whole-thousand steps between 1,000 ms (1 second) and 60,000 ms (60 seconds). The default is 5,000 ms (5 seconds). If you switch Enable API Caching off, the TTL field is hidden and every page load fetches data on demand.

Field reference

Control	What it does	Default
Enable Page Prefetching	Preloads every screen's code in the background after the first page loads, so later navigations are instant.	On
Enable API Caching	Keeps recently loaded read-only data in memory so returning to a page within the window is instant.	On
Cache TTL (milliseconds)	How long cached data is treated as fresh before the next visit fetches it again. Range 1,000–60,000 ms, in steps of 1,000. Shown only while API caching is enabled. The value in seconds is displayed beside the field.	5,000 ms (5 s)
Save	Commits both toggles and the TTL value. Changes apply on the next page load.	—

Choosing the right values

• Want the snappiest experience — leave both toggles on with the default 5-second window. This is the recommended setup for most installs.
• Need near-real-time numbers — lower the Cache TTL toward 1,000–2,000 ms so figures refresh almost every time, at the cost of a few more background requests.
• Running a very busy install — raise the Cache TTL toward 15,000–30,000 ms to cut down on repeat requests when many staff are working at once. Use the higher end only for data that does not change second to second.
• On a slow or metered connection — turn Page Prefetching off so the browser only downloads screens that are actually opened.

Remember the two controls do different jobs: prefetching is about loading the interface faster, while caching is about loading data less often. Turning both off reverts to plain on-demand loading, which adds a small but noticeable pause on each navigation. After saving, refresh or reopen the panel to see the new behavior take effect.

Related

General, Custom Code.