Quick wins for a faster PC:
Clear out junk files and repair common Windows errorsFree Scan →Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Repair Windows errors before they cause bigger problemsFix Now →To expire events in a FlutterFlow app backed by Firebase, store an expiration timestamp on each Firestore document and use that timestamp in two separate ways: hide or disable the event in the app when it expires, then delete its stored records with Firestore TTL or trusted backend cleanup. TTL is asynchronous and does not delete subcollections, so it cannot by itself guarantee that an event and all its related data disappear at the same moment.
Choose what “expire” means for your app
There are two different outcomes to design for. User-facing expiration means an event is no longer shown or usable after its deadline. Data deletion means its Firestore document and related records are removed from storage. They need separate handling: an expired document can remain in Firestore until TTL processes it.
Decide the retention rule before configuring deletion. For example, a product might retain an event until a period after its end time, but the duration should come from your product and legal requirements—not from a default assumed by the database. Store the resulting deadline in a timestamp field such as expireAt.
Hide expired events at the intended time
Use expireAt in the app’s event queries or in the logic that controls event display and actions. That gives you a firm user-facing cutoff even though the document has not yet been deleted. If you only rely on TTL, an expired event may still appear in lookups and queries while it awaits deletion.
Recommended Free Tools
#1 Best Overall
- Read Before You Buy — No Video Output: These adapters support charging and USB 2.0 data transfer, but cannot transmit video signals. Except for standard USB webcams (which use USB data only), they are not compatible with HDMI/DisplayPort cables, video-capable USB-C hubs, or docking stations with video output.
- Convert USB-A Ports to USB-C: Designed to connect USB-C earphones, cables, flash drives, card readers, and other USB-C accessories to standard USB-A ports. Plug-and-play with no drivers or software required.
- Aluminum Alloy Housing: Built with a sturdy aluminum alloy shell that aids in heat dissipation and protects against daily wear and scratches. Designed to maintain a stable and secure connection.
- Compact & Travel-Friendly: The ultra-compact design allows the adapter to stay plugged into your device without blocking adjacent ports or adding bulk, reducing wear and tear on your original USB ports.
- 12-Month Warranty: Backed by a 12-month manufacturer warranty for peace of mind. Designed to meet strict quality control standards for reliable everyday performance.
In FlutterFlow, build the relevant Firestore query or display/action conditions around the expiration timestamp. Check the resulting behavior in the app for both active and expired records; hiding an event in the interface does not delete its Firestore data.
Choose a Firestore cleanup approach
Firestore TTL suits timestamp-based retention where eventual deletion is acceptable. Use trusted backend cleanup when deletion must coordinate multiple records, handle descendants, or include other backend resources. The approaches can be combined: TTL can handle routine retention while backend logic performs supplementary cleanup.
Rank #2
- 5-in-1 USB-C Hub: Experience comprehensive connectivity featuring a Power Delivery input, two USB-A 2.0 ports, a USB-A 3.0 port, and an HDMI port. (Note: The USB-C power delivery input port is only for connecting an external wall charger to power your laptop and cannot power peripheral devices.)
- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
- Quick Data Transfers: Accelerate your productivity with rapid data transfers using a high-speed 5Gbps USB 3.0 port and two 480Mbps USB 2.0 ports.
- 4K HDMI Display: Enhance your visual experience with a hub capable of delivering 4K resolution at 30Hz in both mirror and extend modes. Please note that this hub is compatible with MacBook (macOS 12 and newer), Windows 10 and 11, ChromeOS, and laptops equipped with DP Alt Mode and Power Delivery. Note: This device is not compatible with Linux.
- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
| Approach | Best fit | Timing | Related records | Trade-off |
|---|---|---|---|---|
| Firestore TTL policies | Timestamp-based retention where eventual deletion is acceptable. | Asynchronous; Firebase says expired data is typically deleted within 24 hours after its expiration date. This is an operational expectation, not a guaranteed deadline. | Each collection group needs its own policy and timestamp field. Deleting a parent does not delete its subcollections. | Low ongoing cleanup-code burden, but unsuitable for strict timing or coordinated deletion. |
| Cloud Functions or another trusted client-library process | Cleanup that must coordinate records, descendants, or other backend resources. | Determined by the implementation and, if scheduled, its schedule. | Cleanup code must explicitly find and delete the relevant records; trigger paths must cover the documents being changed. | More implementation and operational complexity; check project billing and deployment prerequisites. |
Configure TTL for event documents
- Add the expiration field. When creating each event, write a Firestore timestamp such as
expireAt, calculated from the event’s end time and your chosen retention rule. Confirm that documents receive a valid timestamp. - Set the TTL policy for the event collection group. In Firestore, configure a TTL policy that names the timestamp field. A TTL policy applies to a collection group, not automatically to every related collection.
- Account for timestamp indexing at scale. Firebase notes that indexing a TTL timestamp field can contribute to hotspots at higher traffic rates. Consider a single-field index exemption where appropriate for your access patterns.
- Monitor behavior. Firebase provides TTL deletion-count and expiration-to-deletion-delay monitoring metrics. Use them to observe service behavior rather than treating expiration as an immediate delete.
See Firebase’s TTL policy documentation for current setup details and operational guidance.
Does Firestore TTL delete subcollections?
No. TTL deletion of an event document does not cascade into its subcollections. If an event has records such as events/{eventId}/attendees/{attendeeId}, the parent’s TTL policy does not remove those attendee documents.
Outdated Drivers Are Slowing You Down
One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchWindows Errors? Fix Them Before They Spread
Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallRank #3
- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
For timestamp-based cleanup of child documents, put an expiration timestamp on them and configure a TTL policy for each relevant child collection group. Alternatively, have trusted backend cleanup explicitly enumerate and delete the descendants. FlutterFlow’s current subcollection documentation describes one supported nesting level; check its documentation and your project’s implementation before relying on a particular hierarchy.
Deleting a Firestore parent document is not proof that its descendants—or other related data—have been erased. Plan the cleanup for each collection group that stores event data.
Rank #4
- Dual Converters, Infinite Potential：Includes 2× USB C male to USB A female adapters and 2× USB A male to USB C female adapters. Perfect for a wide range of uses—tablets with Bluetooth keyboards, expand USB ports on macbook, and more. Two different converters for all your daily needs
- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
- Upgraded Exquisite Craftsmanship: With an aluminum alloy housing and metal connector, the usbc to usb adapter is extremely durable and sturdy. Rigorously tested to withstand more than 10,000 times of plugging and unplugging, ensuring long-lasting performance
- Broad Compatible: The usb c to usb adapter widely supports all USB C/ USB A devices like laptops, tablets, cellphones, car chargers, and phone chargers. Such as compatible with MacBook Pro/Air 2023/2022, Thunderbolt 4/3 Devices,Apple MagSafe Watch 9/8/7/SE/Ultra, iPad Pro 2022/2021, Samsung Galaxy S23/S20/S10, and iPhone 17/16/15 Pro. Plug and play
- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
Use Cloud Functions when cleanup needs coordination
FlutterFlow documents Cloud Functions support, and Firebase documents Firestore create, update, and delete triggers. A function can serve as a backend hook for supplementary cleanup, including when a Firestore deletion trigger runs after TTL deletes a document. But the function must contain the actual cleanup logic: enumerate the relevant descendants and delete them.
Trigger paths matter. A wildcard that matches only parent event documents does not automatically fire for writes or deletions inside subcollection documents. Design triggers for the document paths whose changes should invoke the function. For background on supported trigger types and path behavior, see Firebase’s Firestore Cloud Functions documentation and FlutterFlow’s Cloud Functions guide.
Do these 3 things before closing this tab:
1Clear out junk files and repair common Windows errors2Scan for outdated or missing drivers - takes under a minute3Repair Windows errors before they cause bigger problemsBest Value
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
FlutterFlow’s Firebase setup documentation says Cloud Functions deployment requires billing to be enabled and recommends updating Firestore security rules before deployment. Check the current Firebase connection instructions and your project settings. FlutterFlow also documents Firestore operations through Firestore Actions.
Handle uploaded files separately
Firestore TTL and Firestore triggers address Firestore documents; they do not establish automatic expiration of Firebase Storage objects. If events include photos, videos, or other uploads, implement and verify a separate object-cleanup mechanism. Do not treat deletion of the event document as evidence that its files have been erased.
Test expiration safely
- Use a nonproduction Firebase project and confirm the TTL policy is active for the intended collection group and timestamp field.
- Create test event and child documents with expiration timestamps in the past, then confirm expired events are hidden by the app’s query or display logic.
- Observe Firestore deletion over time rather than expecting an immediate result. Check the parent and every child collection group separately.
- Verify any Cloud Function triggers and explicit descendant cleanup against the paths and data types they are intended to cover.
- If events have uploaded files, verify their cleanup independently of Firestore document deletion.
TTL deletion is not transactional: documents with the same expiration time are not guaranteed to be deleted together, and deletion order is not guaranteed. Updating a document’s TTL timestamp before deletion can change whether and when it expires. If your requirement is strict timing or coordinated removal, use cleanup logic designed for that requirement instead of relying on TTL alone.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
