Cloud Functions is a fully managed event-driven serverless function-as-a-service (FaaS). It is a small piece of code that runs in response to an event. Because it is fully managed, developers can just write the code and deploy it without worrying about managing the servers or scaling up/down with traffic spikes. It is also fully integrated with Cloud Operations for observability and diagnosis. Cloud Functions is based on an open source FaaS framework which makes it easy to migrate and debug locally. 

To use Cloud Functions, just write the logic in any of the supported languages (Go, Python, Java, Node.js, PHP, Ruby, .NET), deploy it using the console, API or Cloud SDK and then trigger it via HTTP(s) request from any service, for example: file uploads to Cloud Storage, events in Pub/Sub or Firebase, or even direct call via Command Line Interface CLI. 

There is a generous free tier and the pricing is based on number of events, compute time, memory and ingress/egress requests and costs nothing if the function is idle. For security, using Identity and Access Management IAM you can define which services or personnel can access the function and using the VPC controls you can define network based access. 

Cloud Functions use cases

Some Cloud Functions use cases include:

• Integration with third-party services and APIs
• Asynchronous workloads like lightweight ETL
• Lightweight APIs and webhooks
• IoT processing and update of the sensors/devices in the field
• Real-time file processing for use cases such as media transcoding or resizing as soon as the file is uploaded in Google Cloud Storage.
• Real-time ML solutions for use cases such as media translation or image recognition for files uploaded in GCS.
• Backend for chat applications and mobile apps.

Firebase Functions and Cloud Functions, are they different?

 If you are a Firebase developer, you’d probably use Firebase Functions. Those are created from the Firebase dashboard / website. Both Cloud Functions and Firebase Functions can do the same things, they just have slightly different signatures and slightly different ways of deploying. Firebase Functions have a local emulator, which Cloud Functions uses the Functions Framework.

For a more in-depth look into Cloud Functions check out the documentation.  Once you’ve got your Function up and running, check out some tips and tricks.https://www.youtube.com/embed/LTMChfWBHb0?enablejsapi=1&

For more #GCPSketchnote, follow the GitHub repo. For similar cloud content follow me on Twitter @pvergadia and keep an eye out on thecloudgirl.dev

Founded in 2015, Rapido operates a mobile app-based two-wheeler taxi service across more than 40 cities in India. More than 100,000 drivers provide Rapido two-wheeler taxi services, while more than 400,000 current or prospective drivers have downloaded the company’s app. Consumers have downloaded the app more than 5 million times, and the business receives about 5 million orders per month for taxi services.

“If a consumer wants to travel from point A to point B, they simply open up the app on their smartphone, select pickup and dropoff locations, and tap ‘request,'” explains Rishikesh SR, Co-Founder, Rapido. “We can track that request to the nearest available two-wheeler taxi and allocate the job to the right driver.”

Google a compelling opportunity

The business started operations on a cloud service. However, Google presented a compelling opportunity to Rapido to improve its location-based intelligence through a wide range of cloud-based map APIs, infrastructure, and mobile app development services. “Google Maps Platform was particularly interesting to our business and we saw enormous potential to use it to improve our service and gain a competitive edge,” says Rishikesh.

Rapido elected to use Geocoding API to enable its app to convert addresses to geographic coordinates, and the reverse, allowing consumers to identify point A and point B on their journey. The company also uses Directions API to identify the fastest route between pickup and dropoff locations, which enables Rapido to provide users with approximate prices for trips. Distance Matrix API is used to calculate the travel times and distances between locations, and Maps SDKs for Android and iOS to add interactive maps to the app.

Google Cloud Results

• Enables the business to optimize use of Maps Platform APIs
• Takes 5 million orders per month
• Establishes a robust platform for expansion

“Google Maps Platform is particularly useful for us as it identifies optimum routes for two-wheel services,” says Rishikesh. “This saves us time and money, while helping us deliver a better consumer experience.”

In addition, Rapido uses the Snap to Roads service to deliver best-fit geometry for sets of GPS coordinates within the Roads API, which identifies and provides metadata about the roads on which drivers travel. “Snap to Roads in Roads API allows us to optimize the path drivers take and helps ensure the fare charged is accurate,” says Rishikesh.

Improving user experiences

As Rapido matured, Rishikesh considered how to improve the user experience of the app while reducing the business’ costs. In 2017, Rapido asked Google Cloud Premier Partner and Google Maps Platform Partner Searce to help meet these objectives. Searce provided the technical and business advice that prompted Rapido to take advantage of the unlimited API calls, 24-hours-a-day, 7-days-a-week support, and strict SLAs available through the Google Maps APIs Premium Plan for Asset Tracking.

Searce also helped Rapido optimize its API calls and integrate directions and distance calls with the Roads API to smooth out variations in GPS readings received from the handsets of two-wheeler taxi owners. Finally, Searce helped Rapido deploy the Firebase mobile and web development platform to automate the mode configuration of the API keys, rather than maintain a time-consuming manual process. This move also minimized the likelihood of any issues arising if Rapido decided to start multiple projects or add more licenses, or combine Google Maps APIs Premium Plan for Asset Tracking with an external license.

Technical skill and experience

Searce finalized its initial engagement with Rapido last year and provides ongoing support and advice. “Searce’s technical skill with Google Maps Platform put us on the right path to provide a better, more relevant user experience,” says Rishikesh.

Rapido also now uses a range of Firebase services for app development, testing, and modification. The business employs Google Analytics for Firebase to measure customer use of and engagement with its app, enabling the business to make informed decisions about where to direct its resources. In addition, the business is using the Firebase Test Lab app-testing infrastructure to test its Android and iOS apps across a range of device configurations, view the outcomes, and make changes as needed.

Rapido uses Firebase Remote Config to change the app’s behavior and appearance on the fly in response to the results of A/B testing across sections of its user base. Furthermore, Rapido uses Firebase Crashlytics to provide app crash reports to its Firebase console.

Firebase Dynamic Links allows Rapido to direct users to linked content in the iOS or Android version of the app, while Firebase Cloud Messaging enables Rapido to deliver notifications and other messages to users. Cloud Firestore provides a NoSQL cloud database to store and sync data for the Rapido app.

Rapido has also started using the Firebase Realtime Database to store and sync information about customers that can be used to provide a more informed, personalized service.

At the same time, Rapido uses a BigQuery data warehouse to process about 10TB of data every month for analysis and reporting that supports decision-making across the business. The organization is also using application containerization through Google Kubernetes Engine on Google Cloud Platform.

“We are moving our apps from dedicated virtual machines to a scalable containerized environment that consumes fewer resources,” says Rishikesh. “It makes sense to work with Google – the business that designed the Kubernetes container-orchestration system.”

Rapido has also started using the Cloud Functions event-driven serverless compute platform to process smaller jobs. “This is ideal for small use cases in particular as we do not have to spin up virtual machine instances,” says Rishikesh.

Finally, Rapido is using image classification through the Vision AI service to analyze riders’ documentation, such as driving licenses. This allows the business to verify details such as names, addresses, and expiry dates with more than 90 percent accuracy – a high rate in a country where each state has its own license template.

Expanding rapidly to new cities

The Rapido app enables drivers to pick up customers quickly – in most cases, between 2 and 5 minutes.

Overall, the high-quality experience for consumers and drivers delivered by Google Maps Platform, combined with Firebase, has helped power Rapido to robust growth. The business now takes more than 5 million orders per month.

“With Google, we are delivering the right experience to users through Google Maps Platform, Firebase, and Google Cloud Platform services,” concludes Rishikesh. “We have realized our vision faster and now have a robust platform to grow in the future.”

The ability to gain real-time insights from IoT data can redefine competitiveness for businesses. Intelligence allows connected devices and assets to interact efficiently with applications and with human beings in an intuitive and non-disruptive way. After your IoT project is up and running, many devices will be producing lots of data. You need an efficient, scalable, affordable way to both manage those devices and handle all that information. 

IoT Core is a fully managed service for managing IoT devices. It supports registration, authentication, and authorization inside the Google Cloud resource hierarchy as well as device metadata stored in the cloud, and the ability to send device configuration from other GCP or third-party services to devices. 

Main components

The main components of Cloud IoT Core are the device manager and the protocol bridges:

• The device manager  registers devices with the service, so you can then monitor and configure them. It provides:
  • Device identity management 
  • Support for configuring, updating, and controlling individual devices
  • Role-level access control
  • Console and APIs for device deployment and monitoring
• Two protocol bridges (MQTT and HTTP) can be used by devices to connect to Google Cloud Platform for:
  • Bi-directional messaging
  • Automatic load balancing
  • Global data access with Pub/Sub

How does Cloud IoT Core work?

Device telemetry data is forwarded to a Cloud Pub/Sub topic, which can then be used to trigger Cloud Functions as well as other third-party apps to consume the data. You can also perform streaming analysis with Dataflow or custom analysis with your own subscribers.

Cloud IoT Core supports direct device connections as well as gateway-based architectures. In both cases the real time state of the device and the operational data is ingested into Cloud IoT Core and the key and certificates at the edge are also managed by Cloud IoT Core. From Pub/Sub the raw input is fed into Dataflow for transformation, and the cleaned output is populated in Cloud Bigtable for real-time monitoring or BigQuery for warehousing and machine learning. From BigQuery the data can be used for visualization in Looker or Data Studio and it can be used in Vertex AI for creating machine learning models. The models created can be deployed at the edge using Edge Manager (in experimental phase). Device configuration updates or device commands can be triggered by Cloud Functions or Dataflow to Cloud IoT Core, which then updates the device.  

Design principles of Cloud IoT Core

As a managed service to securely connect, manage, and ingest data from global device fleets, Cloud IoT COre is designed to be:

• Flexible, providing easy provisioning of device identities and enabling devices to access most of Google Cloud
• IThe industry leader in IoT scalability and performance
•  Interoperable, with supports for the most common industry-standard IoT protocols

Use cases

IoT use cases range across numerous industries. Some typical examples include:

• Asset tracking, visual inspection, and quality control in retail, automotive, industrial, supply chain and logistics
• Remote monitoring and predictive maintenance in oil & gas, utilities, manufacturing, and transportation
• Connected homes and consumer technologies.
• Vision intelligence in retail, security, manufacturing, and industrial sectors
• Smart living in commercial, residential, and smart spaces 
• Smart factories with predictive maintenance and real-time plant floor analytics

 For a more in-depth look into Cloud IoT Core check out the documentation.  

https://youtube.com/watch?v=76v16P-Wqe4%3Fenablejsapi%3D1%26

For more #GCPSketchnote, follow the GitHub repo. For similar cloud content follow me on Twitter @pvergadia and keep an eye out on thecloudgirl.dev.