Firebase Cloud Functions Tutorial — Firestore Trigger Functions

It’s no secret by now that Firebase is one of my favorite tools. Their team just makes it so easy to develop an app in record time. In my last article, we covered how to make a REST API using Firebase Functions. While that is a good start to what you can do, there is so much more.

In this tutorial, we’ll cover Firebase Function triggers and how you can use them to make development easier. With them, we can listen to Firestore tables, storage buckets, authentication requests, and more. Then we can execute code when a specific event occurs.

In this tutorial, we’ll cover Cloud Firestore Trigger functions. These are just a few examples of the different listeners and actions you can take. Obviously, there is much more you can do, but this should give you a good idea of what these can accomplish.

#firebase #nodejs #javascript #programming #serverless

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Firebase Cloud Functions Tutorial — Firestore Trigger Functions
Adaline  Kulas

Adaline Kulas


Multi-cloud Spending: 8 Tips To Lower Cost

A multi-cloud approach is nothing but leveraging two or more cloud platforms for meeting the various business requirements of an enterprise. The multi-cloud IT environment incorporates different clouds from multiple vendors and negates the dependence on a single public cloud service provider. Thus enterprises can choose specific services from multiple public clouds and reap the benefits of each.

Given its affordability and agility, most enterprises opt for a multi-cloud approach in cloud computing now. A 2018 survey on the public cloud services market points out that 81% of the respondents use services from two or more providers. Subsequently, the cloud computing services market has reported incredible growth in recent times. The worldwide public cloud services market is all set to reach $500 billion in the next four years, according to IDC.

By choosing multi-cloud solutions strategically, enterprises can optimize the benefits of cloud computing and aim for some key competitive advantages. They can avoid the lengthy and cumbersome processes involved in buying, installing and testing high-priced systems. The IaaS and PaaS solutions have become a windfall for the enterprise’s budget as it does not incur huge up-front capital expenditure.

However, cost optimization is still a challenge while facilitating a multi-cloud environment and a large number of enterprises end up overpaying with or without realizing it. The below-mentioned tips would help you ensure the money is spent wisely on cloud computing services.

  • Deactivate underused or unattached resources

Most organizations tend to get wrong with simple things which turn out to be the root cause for needless spending and resource wastage. The first step to cost optimization in your cloud strategy is to identify underutilized resources that you have been paying for.

Enterprises often continue to pay for resources that have been purchased earlier but are no longer useful. Identifying such unused and unattached resources and deactivating it on a regular basis brings you one step closer to cost optimization. If needed, you can deploy automated cloud management tools that are largely helpful in providing the analytics needed to optimize the cloud spending and cut costs on an ongoing basis.

  • Figure out idle instances

Another key cost optimization strategy is to identify the idle computing instances and consolidate them into fewer instances. An idle computing instance may require a CPU utilization level of 1-5%, but you may be billed by the service provider for 100% for the same instance.

Every enterprise will have such non-production instances that constitute unnecessary storage space and lead to overpaying. Re-evaluating your resource allocations regularly and removing unnecessary storage may help you save money significantly. Resource allocation is not only a matter of CPU and memory but also it is linked to the storage, network, and various other factors.

  • Deploy monitoring mechanisms

The key to efficient cost reduction in cloud computing technology lies in proactive monitoring. A comprehensive view of the cloud usage helps enterprises to monitor and minimize unnecessary spending. You can make use of various mechanisms for monitoring computing demand.

For instance, you can use a heatmap to understand the highs and lows in computing visually. This heat map indicates the start and stop times which in turn lead to reduced costs. You can also deploy automated tools that help organizations to schedule instances to start and stop. By following a heatmap, you can understand whether it is safe to shut down servers on holidays or weekends.

#cloud computing services #all #hybrid cloud #cloud #multi-cloud strategy #cloud spend #multi-cloud spending #multi cloud adoption #why multi cloud #multi cloud trends #multi cloud companies #multi cloud research #multi cloud market

Cloud Functions — Firestore Triggers

Cloud Functions is a feature provided by Firebase for running server codes at Google infrastructures in response to events triggered by Firebase events and HTTPS requests. Developer does not have to handle the maintenance and scalability issues. Firebase automatically scales up computing resources to match the usage patterns of your users. Each function runs in isolation in its own environment with its own configuration.Developer just has to write the business logic and let Google handle the server for us.

There are a lots of available Firebase events and one of them is Firestore event. Firestore notifies Cloud Functions once any document is created, updated and deleted within the specific collection. It is useful for adding extra information at document initialisation, validating information when document is updated and notifying admins / users once their information is deleted.

The implementation is not difficult but with some tricks. Lets see here!

1. onCreate

const functions = require("firebase-functions")
	Example of new data: {
	 'fooKey': 'fooValue'
	exports.onCreateTrigger = functions.firestore
	    .onCreate((queryDocumentSnapshot, eventContext) => {
	        // ID of newly created document
	        const newlyCreatedDocumentID = eventContext.params.docId

	        // Retrieve value from data
	        const createdData =;
	        const fooValueSyntax1 = createdDate.fooKey;
	        const fooValueSyntax2 = createdDate["fooKey"];
	        const fooValueSyntax3 = queryDocumentSnapshot.get("fooKey");

	        return 0
view raw
OnCreateTrigger.js hosted with ❤ by GitHub

onCreate is triggered once a new document in a specific collection ( fooCollection at line 8) is created. The callback contains a QueryDocumentSnapshot and an EventContext. Document id and document data can be retrieved from them for further checking (See line 11 to line 17).

#google #firebase-cloud-functions #firestore #firebase #gcp #function

Adaline  Kulas

Adaline Kulas


What are the benefits of cloud migration? Reasons you should migrate

The moving of applications, databases and other business elements from the local server to the cloud server called cloud migration. This article will deal with migration techniques, requirement and the benefits of cloud migration.

In simple terms, moving from local to the public cloud server is called cloud migration. Gartner says 17.5% revenue growth as promised in cloud migration and also has a forecast for 2022 as shown in the following image.

#cloud computing services #cloud migration #all #cloud #cloud migration strategy #enterprise cloud migration strategy #business benefits of cloud migration #key benefits of cloud migration #benefits of cloud migration #types of cloud migration

What is firebase,firebase bangla tutorial.

#firebase #firebase database #c# with firebase #c# with firebase tutorials #c# with firebase database with firebase database

Flutter Tutorial - Cloud Firestore🔥 | Flutter Firestore CRUD | Flutter Firestore Tutorial

Here I am with yet another great video with a lot of learning potential. Not like others! It is all detailed and I tried my best to explain all the CRUD operations.

Subscribe to show some love!

#flutter #flutter-firestore #flutter-tutorial #firestore-tutorial #firestore-crud