README

Introduction

This TYPO3 extension fixes a known core issue (Forge #91561, #93661) where the page cache lifetime is not correctly calculated when "Insert Records" (CType = shortcut) content elements reference time-controlled target elements.

The Problem

When a shortcut element references a target element with a starttime or endtime, TYPO3 calculates the cache lifetime only based on the shortcut record itself. Since the shortcut has no time settings, the default lifetime of 86400 seconds (24 hours) is used — instead of the remaining time until the next visibility change of the referenced target element.

This affects TYPO3's page cache in general: pages are served from cache even after a scheduled visibility change of a referenced element should have taken effect. Any caching layer built on top — such as staticfilecache — inherits the same incorrect lifetime and compounds the problem further.

The Solution

The extension listens to TYPO3's ModifyCacheLifetimeForPageEvent PSR-14 event. For each page render, it:

1. Queries all CType = shortcut content elements on the current page
2. Parses their records field to find the referenced tt_content UIDs
3. Reads the starttime and endtime of those referenced records
4. Reduces the page cache lifetime to match the next scheduled visibility change

Installation

composer req in2code/in2shortcutcache

No further configuration is required. The extension registers its event listener automatically via Configuration/Services.yaml.

Supported formats for the records field

The tt_content.records field (used by CType = shortcut) can contain UIDs in different formats. All of the following are handled correctly:

Scope

The following fields of the referenced tt_content records are considered:

Support for in2frequently is optional. If the package is not installed, the behaviour is identical to before. No configuration is required — the integration is activated automatically once in2code/in2frequently is present.

The fix applies to direct shortcut references. Nested shortcuts (a shortcut referencing another shortcut that in turn references a time-controlled element) are currently not resolved transitively.

Configuration

The extension can be configured via the TYPO3 Extension Manager or LocalConfiguration.php under the key in2shortcutcache.

Changelog