Amazon API Gateway vs Google Cloud Pub/Sub
Discover how Amazon API Gateway compares to Google Cloud Pub/Sub, and understand which is right for your use case, based on dimensions such as core features, pricing, reliability, and scalability.
What is Amazon API Gateway?
Amazon API Gateway is a pay-as-you-go service for building, deploying, and managing RESTful APIs and WebSocket APIs. It handles traffic management, CORS support, access and authentication, version management, and more.
Suitable for:
- Realtime chat applications
- Online collaborative apps
- Multiplayer gaming
- Realtime analytics
- Monitoring services
Not suitable for:
- Heavy data transfers
Pros:
- Pre-built adapters
- Fine-grained security features
- Scalable
- Multiple SDKs
Cons:
- Complex setup
- Learning curve
- Enterprise-focused
What is Google Cloud Pub/Sub?
Google Cloud Pub/Sub is a real-time messaging service. Pub/Sub is used for asynchronous messaging between different systems, and services, within your applications. It enables developers to build robust and scalable real-time applications.
Suitable for:
- Chat applications
- Realtime analytics
- IoT data ingestion
- Log aggregations
- Online collaboration applications
Not suitable for:
- Stateful applications
Pros:
- Highly scalable
- Easy to use
- Integrates with Google Cloud's ecosystem
- Reliable
Cons:
- Cost can escalate quickly
- Vendor lock-in
- Debugging can be challenging
- Limited retention time
- Lack of configuration control
- Isolated service
Compare Amazon API Gateway and Google Cloud Pub/Sub
Let’s compare Amazon API Gateway and Google Cloud Pub/Sub, looking at key dimensions such as their core features, pricing, integrations, QoS, performance, and security and compliance.
Disclaimer:This comparison was created based on documentation and resources freely available online about Amazon API Gateway and Google Cloud Pub/Sub. The content was last updated on 17 Jul 2024 for Amazon API Gateway and on 22 Jul 2024 for Google Cloud Pub/Sub. Be sure to double-check everything before you make any decisions. If you do find anything incorrect or out of date, then please contact us.
| Core features | |||
Pub/Sub messaging | Reduces communication code complexity, simplifying the process of building highly functional and architecturally complex realtime apps. | Amazon API Gateway No | Google Cloud Pub/Sub Yes |
Chat capabilities | Accelerates the time to implement rich chat experiences with features such as read receipts, typing indicators, and more. | Amazon API Gateway Partial API Gateway does not natively support chat capabilities. However, this can be achieved using different AWS services like Lambda and DynamoDB. | Google Cloud Pub/Sub No Chat features such as group chat, emojis, and file sharing are not supported by Google Pub/Sub out of the box, which is intended to be used for service-to-service communication. |
Collaboration capabilities | Enables you to quickly integrate realtime collaborative features like live cursors, member location, avatar stacks, and component locking. | Amazon API Gateway Yes | Google Cloud Pub/Sub No Google Pub/Sub recommends using other Google services like Firebase Realtime database to build applications that require functionalities like collaboration. Read more |
State sync capabilities | Enables realtime data synchronization across devices and users, ensuring a cohesive and up-to-date user experience. | Amazon API Gateway Partial API Gateway does not natively support state synchronization, but it can be achieved through integration with services like Amazon DynamoDB, AWS AppSync, AWS Lambda, and Amazon S3. | Google Cloud Pub/Sub No Google Pub/Sub does not support a state sync feature out of the box, but this can be achieved in combination with a realtime database. |
Presence | Maintaining a view of which users are connected, and their associated metadata, enables their online status to be updated in realtime. | Amazon API Gateway No | Google Cloud Pub/Sub No |
Occupancy | High-level metrics about the clients currently connected to a channel make it simple to show things such as connected user count, or display which channels are the most popular. | Amazon API Gateway Partial API Gateway does not have built-in support for occupancy tracking. Occupancy tracking functionality requires integration with AWS Lambda, DynamoDB, or ElastiCache. | Google Cloud Pub/Sub Yes Google Pub/Sub provides monitoring dashboards that can be used to monitor subscriptions. Subscriptions can also be monitored through the Cloud Monitoring API. Read more |
Message interactions | Enables interaction with previously-sent messages, facilitating the implementation of features like message reactions and threads. | Amazon API Gateway Partial Message interactions are not natively supported in API Gateway. However, you can programmatically build interactions on the application layer with AWS Lambda. | Google Cloud Pub/Sub No |
Message history | Enables clients to catch up on missed messages when inactive, ensuring a user doesn’t miss any important messages. | Amazon API Gateway Partial You can custom build message history functionality on Amazon DynamoDB and Amazon S3, but it's not supported natively in API Gateway. | Google Cloud Pub/Sub No Pub/Sub can't retrieve acknowledged messages. You can use the Seek feature to mark them as unacknowledged and redeliver them or delete unacknowledged messages. Read more |
Push notifications | Cross-platform push notifications make it possible to deliver important and timely messages to users even when they’re inactive. | Amazon API Gateway Partial API Gateway doesn't natively support push notifications, but you can build them be integrating with Amazon SNS or AWS Amplify. | Google Cloud Pub/Sub Yes You can create a push subscription workflow for push notifications using Google Pub/Sub. Read more |
Message delta compression | Minimizes bandwidth and can reduce latency, particularly in scenarios where continuous updates are sent. | Amazon API Gateway No | Google Cloud Pub/Sub No |
Programmatic management | Enables the automation of provisioning, management, and testing of service resources, simplifying integration with existing development workflows such as CI. | Amazon API Gateway Yes Fully supported through AWS SDKs, the CLI, and CloudFormation. | Google Cloud Pub/Sub Yes |
| Pricing | |||
Free plan | With a free plan, you can test the service’s functionality and compatibility with your project before committing to a paid plan. | Amazon API Gateway Yes The Amazon API Gateway free tier includes one million API calls received for REST APIs, one million API calls received for HTTP APIs, and one million messages and 750,000 connection minutes for WebSocket APIs per month for up to 12 months. Read more | Google Cloud Pub/Sub No |
Pricing model | The pricing model should align with your project's expected load, usage patterns, and budget in order to be cost-effective and efficient. | Amazon API Gateway API Gateway has a free plan and a pay-as-you-go plan:
| Google Cloud Pub/Sub Google Pub/Sub has usage-based pricing, based the number of published, delivered, and stored bytes. Read more |
| Integrations & interoperability | |||
SDKs | Supporting multiple languages and platforms offers greater flexibility when building cross-platform realtime apps. | Amazon API Gateway
| Google Cloud Pub/Sub
|
Supported realtime protocols | Support for multiple protocols provides the flexibility to choose a protocol that best suits your project’s requirements. | Amazon API Gateway
| Google Cloud Pub/Sub None. Google Pub/Sub does not natively support any real-time protocols. However, you can implement WebSockets using other Google services like Google's Compute Engine. |
Serverless functions | Enables integration with third-party cloud providers by facilitating the execution of custom code against messages to perform business logic like on-the-fly translation. | Amazon API Gateway
| Google Cloud Pub/Sub
|
Streaming & queueing | Provides a dependable method to reroute messages from the service to third-party streams and queues for further processing. | Amazon API Gateway | Google Cloud Pub/Sub Yes |
Observability services | Enables realtime monitoring and troubleshooting by offering insights into service behavior directly in your observability platform of choice. | Amazon API Gateway Yes Amazon API Gateway logs API calls, latency, and error rates to Amazon CloudWatch in your AWS account. | Google Cloud Pub/Sub Yes The Google Monitoring, Alerting and Logging integration provides observability services. Read more |
CI/CD tools | Makes it possible to provision and configure service infrastructure as part of a CI or CD pipeline, enabling repeatable and reliable deployments. | Amazon API Gateway Yes Supports:
| Google Cloud Pub/Sub Yes Supports:
|
| Quality of Service | |||
Scalability | Scalability is vital as it ensures the service can handle increased data load or users without compromising performance. | Amazon API Gateway AWS API Gateway is scalable, supporting high connection rates, numerous routes and integrations, and long-lived connections without explicit concurrent connection limits. You can find more info on limits here. | Google Cloud Pub/Sub Google Pub/Sub is built to be scalable and reliable. Google uses the service for their products to send billions of messages per day. You can read more about their architecture and limitations in their documentation. |
Guaranteed message delivery | Ensures messages are never lost during transmission, even in the presence of network disruptions. | Amazon API Gateway No | Google Cloud Pub/Sub Yes |
Guaranteed message ordering | Maintains the sequence of messages as they were sent. This is particularly important in apps where the chronological order of messages is essential for meaningful communication. | Amazon API Gateway No | Google Cloud Pub/Sub No Google Pub/Sub supports message ordering, but cannot always guarantee it even when this is enabled - for example, when dead-letter topics are enabled on subscriptions. Read more |
Exactly-once message delivery | Guarantees that each message is processed exactly once, preventing data inconsistencies that can arise from duplicate processing or missing messages. | Amazon API Gateway No | Google Cloud Pub/Sub Yes Google Pub/Sub supports exactly-once delivery based on a Pub/Sub-defined unique message ID. Read more |
| Performance & availability | |||
Uptime Guarantee | An uptime guarantee instills confidence in the reliability of the service and protects your business from the negative impacts of downtime. | Amazon API Gateway 99.95%. Read more | Google Cloud Pub/Sub 99.95% Read more |
Global edge network | By bringing servers (Points of Presence, or PoP) geographically closer to the devices of end users, and routing requests to the nearest PoP, global latency is reduced to a minimum. | Amazon API Gateway Yes API Gateway API endpoints can be configured to be closer to where the majority of your traffic is originating from. Read more | Google Cloud Pub/Sub Yes |
Multi-region data replication (message durability) | By replicating data across multiple regions, the risk of data loss or downtime is greatly mitigated since if data is lost or a server fails in one region, the information can be retrieved from another. | Amazon API Gateway Partial API Gateway supports multi-region data replication only when integrated with Amazon CloudFront. Read more | Google Cloud Pub/Sub Yes Google Pub/Sub supports synchronous data replication across three zones. |
No single point of failure or congestion | Having no single point of failure means a system is resilient and can continue to operate even if one part fails. Avoiding a single point of congestion ensures messages flow efficiently across the system and avoids bottlenecks that could lead to performance issues under load. | Amazon API Gateway No | Google Cloud Pub/Sub Yes |
Latency | Low latency is crucial for realtime apps as it ensures swift and efficient data transmissions, providing a smoother and more responsive user experience. | Amazon API Gateway Unknown. | Google Cloud Pub/Sub 100ms round trip |
| Security & compliance | |||
API key authentication | Simplifies the authentication code on trusted servers compared to requesting, managing, and refreshing tokens. | Amazon API Gateway Yes | Google Cloud Pub/Sub No Google Pub/Sub only supports gcloud CLI credential and Application Default Credentials (ADC). Read more |
Token-based authentication | Provides a means to securely authenticate user devices against your user management system. | Amazon API Gateway Yes | Google Cloud Pub/Sub Yes |
Single Sign-On (SSO) authentication | SSO streamlines login processes, boosts security by minimizing password use, and meets compliance needs for secure data access management. | Amazon API Gateway Yes AWS API Gateway supports SSO by integrating with identity providers such as OpenID Connect (OIDC) and SAML. Read more | Google Cloud Pub/Sub Yes SSO authentication in Pub/Sub is supported through Google Cloud IAM, OAuth 2.0, and Workforce Identity Federation, allowing integration with external identity providers like Azure AD or Okta. Read more |
Rules for permissions and operations | Provides control over which users can subscribe and publish to certain channels. | Amazon API Gateway Yes Rules for permissions and operations can be configured using AWS Identity and Access Management. Read more | Google Cloud Pub/Sub Yes Rules for permissions and operation can be configured using Identity and Access Management (IAM). Read more |
End-to-end encryption | Ensures that the data transmitted between the client and the API server remains confidential and secure while in transit. | Amazon API Gateway | Google Cloud Pub/Sub Yes |
Encryption at rest | Ensures data stored by the service is secure and compliant, while also mitigating the risks of a data breach. | Amazon API Gateway Partial It is possible to encrypt data at rest using AWS SDKs or AWS CLI when creating a file system. This is not done automatically. Read more | Google Cloud Pub/Sub Yes |
Compliance | Compliance with regulations can impact your ability to meet legal obligations in your industry. | Amazon API Gateway
| Google Cloud Pub/Sub
|
Alternatives to Amazon API Gateway and Google Cloud Pub/Sub
Whilst both Amazon API Gateway and Google Cloud Pub/Sub are worth considering as options for realtime experiences, they aren’t without their limitations. We suggest evaluating them against the following alternatives to make sure you find the right solution for your needs.
Alternatives to Amazon API Gateway
AWS AppSync enables developers to seamlessly handle and synchronize mobile app data in real-time across multiple devices and users.
PubNub is a developer API platform that powers the realtime infrastructure in apps to build engaging Virtual Spaces where online communities can connect.
Microsoft Azure Web PubSub is a fully managed PubSub offering. It is available as part of Microsoft's Azure Cloud Computing platform.
Alternatives to Google Cloud Pub/Sub
AWS SQS is a message queuing solution for decoupling apps, services & architectures.
Amazon SNS is an AWS service for designed to distribute notifications from applications to subscribers via SMS, email, etc.
Apache Kafka is an open-source real-time data streaming platform.
Discover how Amazon API Gateway and Google Cloud Pub/Sub stack up against Ably
Ably is the definitive realtime experience platform of the internet. See how we compare to Amazon API Gateway and Google Cloud Pub/Sub on key dimensions such as core features, pricing, integrations, QoS, performance, and security and compliance.
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- 6M Monthly messages
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- 200 concurrent connections
