The Orleans runtime provides two mechanisms, called timers and reminders, that enable the developer to specify periodic behavior for grains.
- To set a reminder for your task in TickTick using a preset reminder date, do the following: Select your Task; Click the Due Date button; Select the date you want; Click the Set Reminder button; Select one of the presets and click Ok; If you want to set a custom reminder date, do the following: Select your Task; Click the Due Date button; Select the date you want.
- Add reminders to tasks Add reminders to subtasks (Premium) Home. Upgrade to Premium. TickTick Help; User Guide; Web; Articles in this section. TickTick Team October 26, 2018 08:11; Updated Add reminders to tasks Add reminders to subtasks (Premium) Facebook; Twitter; LinkedIn; Return to top.
- TickTick Now Supports Multiple Reminders! When you enter due date setting page, you can set a reminder time first, then you tap a reminder setting bar below. In Custom Reminder, you can set reminders as “X minutes/hours/days before” (android). Tap “Confirm” and a new reminder time will be.
- TickTick will automatically parse it into a reminder.
Timers are used to create periodic grain behavior that isn't required to span multiple activations (instantiations of the grain). It is essentially identical to the standard .NET System.Threading.Timer class.In addition, timers are subject to single-threaded execution guarantees within the grain activation that it operates on.
Each activation may have zero or more timers associated with it. The runtime executes each timer routine within the runtime context of the activation that it is associated with.
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To start a timer, use the Grain.RegisterTimer method, which returns an IDisposable reference:
Cancel the timer by disposing it.
A timer will cease to trigger if the activation is deactivated or when a fault occurs and its silo crashes.
- When activation collection is enabled, the execution of a timer callback does not change the activation's state from idle to in-use. This means that a timer cannot be used to postpone deactivation of otherwise idle activations.
- The period passed to Grain.RegisterTimer is the amount of time that passes from the moment the Task returned by asyncCallback is resolved to the moment that the next invocation of asyncCallback should occur. This not only makes it impossible for successive calls to asyncCallback to overlap, but also makes it so that the length of time asyncCallback takes to complete affects the frequency at which asyncCallback is invoked. This is an important deviation from the semantics of System.Threading.Timer.
- Each invocation of asyncCallback is delivered to an activation on a separate turn, and will never run concurrently with other turns on the same activation. Note however, asyncCallback invocations are not delivered as messages and are thus not subject to message interleaving semantics. This means that invocations of asyncCallback should be considered as behaving as if running on a reentrant grain with respect to other messages to that grain.
Reminders are similar to timers, with a few important differences:
- Reminders are persistent and will continue to trigger in almost all situations (including partial or full cluster restarts) unless explicitly cancelled.
- Reminder 'definitions' are written to storage. However, each specific occurrence, with its specific time, is not. This has the side effect that if the cluster is completely down at the time of a specific reminder tick, it will be missed and only the next tick of the reminder will happen.
- Reminders are associated with a grain, not any specific activation.
- If a grain has no activation associated with it when a reminder ticks, the grain will be created. If an activation becomes idle and is deactivated, a reminder associated with the same grain will reactivate the grain when it ticks next.
- Reminders are delivered by message and are subject to the same interleaving semantics as all other grain methods.
- Reminders should not be used for high-frequency timers- their period should be measured in minutes, hours, or days.
Reminders, being persistent, rely upon storage to function.You must specify which storage backing to use before the reminder subsystem will function.This is done by configuring one of the reminder providers via
UseXReminderService extension methods, where X is the name of the provider, for example,
Azure Table configuration:
If you just want a placeholder implementation of reminders to work without needing to set up an Azure account or SQL database, then this will give you a development-only implementation of the reminder system:
A grain that uses reminders must implement the IRemindable.ReceiveReminder method.
To start a reminder, use the Grain.RegisterOrUpdateReminder method, which returns an IGrainReminder object:
- reminderName is a string that must uniquely identify the reminder within the scope of the contextual grain.
- dueTime specifies a quantity of time to wait before issuing the first timer tick.
- period specifies the period of the timer.
Since reminders survive the lifetime of any single activation, they must be explicitly cancelled (as opposed to being disposed). You cancel a reminder by calling Grain.UnregisterReminder:
reminder is the handle object returned by Grain.RegisterOrUpdateReminder. Camtasia 60fps recording.
Instances of IGrainReminder aren't guaranteed to be valid beyond the lifespan of an activation. If you wish to identify a reminder in a way that persists, use a string containing the reminder's name.
If you only have the reminder's name and need the corresponding instance of IGrainReminder, call the Grain.GetReminder method:
Which Should I Use?
We recommend that you use timers in the following circumstances:
Ticktick Apple Reminders
- When it doesn't matter (or is desirable) that the timer ceases to function if the activation is deactivated or failures occur.
- The resolution of the timer is small (e.g. reasonably expressible in seconds or minutes).
- The timer callback can be started from
Grain.OnActivateAsyncor when a grain method is invoked.
We recommend that you use reminders in the following circumstances:
- When the periodic behavior needs to survive the activation and any failures.
- Performing infrequent tasks (e.g. reasonably expressible in minutes, hours, or days).
Combining Timers and Reminders
You might consider using a combination of reminders and timers to accomplish your goal.For example, if you need a timer with a small resolution that needs to survive across activations, you can use a reminder that runs every five minutes, whose purpose is to wake up a grain that restarts a local timer that may have been lost due to a deactivation.
Tick is a next generation incredibly-customizable To-Do app. You can customize the entire interface with your favorite colors. Set reminders and have them synced to your Mac or iPad. Tick changes its colors as you move from a bright to a dark environment.
In bed at night adding to-dos for tomorrow? Tick will detect you are in a dark room and automatically switch to a dark user interface. Next morning, you are packing for your trip, Tick will switch to a bright one. It works like magic!
Clarity isn't just a word, you've to mean it! How to add a to-do in Tick, create a reminder, and mark a to-do as done, is straightforward and simple. No invisible gestures to remember every time you launch Tick.
Customization in Tick goes beyond rearranging lists and changing icons. Your color choices affect the entire user interface including system elements, and even the keyboard's cursor. Fonts? You can change those too!
Tick syncs with the native Reminders app on all your devices, making it incredibly versatile. For example, you can edit your to-dos in Reminders from your Mac or iCloud.com and changes instantly appear in Tick.
While you can share lists via Email, AirDrop is the new kid in town. With Tick, you can beam lists directly to other iDevices. Lists are transfered along with your chosen color, icon, and name.
Tick Tick Reminders How To
One of the benefits of Tick's seamless syncing with the native Reminders app is that you can use Siri to add to-dos to your Tick lists. For example, 'Add milk to my shopping list'.
Tick has an extremely powerful URL scheme that lets you create to-dos, reminders, and even to-do lists with specific colors from other apps. Learn more.
In The Press
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'From entertaining animations to beautiful translucent menus, Tick is an experience in its own.'
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'Tick: A To-Do App To Call Your Own.'
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