When using StreamBuilder in Flutter to read changes in a document in Firestore, how am I charged?
Am I charged for each time I listen whether there is any change or not multiplied by number of users or any different pricing is used.
After doing some research and reading documentation, I am ready to answer my own question.
If we are using StreamBuilder to fetch Snapshot from Firestore then we are charged for read only when the data is updated and are NOT charged continuously.
Hope it helps someone else.
Related
As Firestore charges by the read/write, it would be super helpful to keep the changes in memory during the session and only commit them when the user exists either the entire app or a specific section. Is there a way to do that in a Flutter web application?
I think one problem with this approach is that the user might just close the tab including your app. In this case, you have no time to send your data to Firestore.
This aside, you could use packages like Hive to store your documents offline and later run a function to add the data to Firestore later.
You also have 50k reads and 20k writes for free with Firebase, which is sufficient for smaller apps. If you exceed this limit, your app is probably big enough to earn money with it anyway.
Let's say I have millions of records like this. I am showing this information in GridView. It will take a lot of time to download the whole database and then display results. How do I download only 50 records at a time and when I am about to reach the end of list download another 50 and so on like Google image search results? Is it possible?
What you want is called pagination. I don't know about real-time databases but I do know firebase firestore provides you with tools to do that. You could check this link out for firebase firestore.
https://www.youtube.com/watch?v=poqTHxtDXwU&feature=emb_logo
You can write code to fetch specific data then add a scrollController to page and a code to fetch next data whenever your scrollController reaches bottom of page.
For it you have to learn using scrollController.
https://youtu.be/pGmHYXC5MeU
My page is quite small it has around 300-1000 visits each day. But at some point I started to accumulate HUGE firestore read requests:
Till the 8th date it was somewhere around 50K each day. I am pushing new code all the time so I'm not sure what I did. Looking at the page I don't see anything out of ordinary. Is there some sort of log in google or firestore I could look at?
The Firebase documentation indicates that each time you create a project, it also creates a project in Google Cloud Platform, therefore you can track daily Cloud Firestore usage like writes, deletes, etc. This usage information is shown in the GCP's console in the App Engine Quotas page .You can see more details in the link. https://firebase.google.com/docs/firestore/monitor-usage#google-cloud-platform-console
There is currently no way to track the origin of reads. What you're looking at now is the best indicator you have available.
Bear in mind that the Firebase and Cloud consoles show updates to documents in real time, and each document update costs a read. If you leave the console open on a busy collection, it will rack up reads.
I was wondering if there was a way to increment a value in Firestore with Ionic. For example, a like button and when clicked a field value 'likes' adds +1 onto the existing value.
I saw examples with 'transactions' where this is done but it was with the Realtime Database rather than the Cloud Firestore. I looked further and could not find any documentation regarding Firestore.
Is there anyway to pull this off without pulling the existing value from the snapshot first?
Thanks,
Troy
There are no server-side increment operators in Firestore. To increase an existing value, your app will first need to read that value.
For an example of using a transaction in Firestore, see updating data with transactions in the Firestore documentation. This literally shows how to add 1 to a field.
Firebase Database gives 10 MB of offline database cache limit as per their documentation but there is no mentioning of offline data limit for Firestore database.
What is offline data saving limit of Firestore ?
As per Firebase Support Team Answer
-
As of the moment, there is no limit on the size of the cached data for Firestore, however, this lack of limit is a known issue.
We intend to implement this on Firestore, though we cannot provide any timeline on when will this be released.
So for now there is no limit of offline storage for Firestore
Support ticket response in mail have attached a link of its screenshot here please check - photos.app.goo.gl/bynk314vrnxF0Odk2