Amazon SNS vs Socket.IO
Discover how Amazon SNS compares to Socket.IO, and understand which is right for your use case, based on dimensions such as core features, pricing, reliability, and scalability.
What is Amazon SNS?
AWS Simple Notification Service (SNS) is a fully managed notification service thats uses the Pub/Sub model to provide message delivery from publishers to subscribers.
What is Socket.IO?
Socket.IO is a library created in 2010 that provides realtime, bi-directional communication between clients and servers. It allows the management of connections, sending and receiving messages, and more. Built on top of the WebSocket protocol, it provides additional capabilities compared to raw WebSockets. WebTransport (a WebSocket alternative) is also supported.
Compare Amazon SNS and Socket.IO
Let’s compare Amazon SNS and Socket.IO, 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 SNS and Socket.IO. The content was last updated on 1 Aug 2024 for Amazon SNS and on 26 Sept 2024 for Socket.IO. 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 If you do find anything incorrect or out of date, then please contact us.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 SNS | Socket.IO No Need to rely on a third party - e.g. use a Redis adapter to broadcast events to clients through the Redis pub/sub mechanism. Read more |
Chat capabilities | Accelerates the time to implement rich chat experiences with features such as read receipts, typing indicators, and more. | Amazon SNS Partial AWS SNS does not have in-built chat capabilities. It's primarily used for message delivery across HTTP/S, email, SMS, and Amazon SQS. You can use AWS Chatbot to enable chat in conjunction with SNS. | Socket.IO Partial As it's a library, you need to create the chat capabilities yourself. But this can be done using Socket.IO. |
Collaboration capabilities | Enables you to quickly integrate realtime collaborative features like live cursors, member location, avatar stacks, and component locking. | Amazon SNS No | Socket.IO Partial As it's a library, you need to implement collaboration capabilities yourself. But you can do this using Socket.IO itself. |
State sync capabilities | Enables realtime data synchronization across devices and users, ensuring a cohesive and up-to-date user experience. | Amazon SNS Partial AWS SNS notifies on changes, but does not manage state synchronization directly. | Socket.IO No The library does not support this. You would need to create a bespoke state sync capability or integrate a third party library to get state synchronisation. |
Presence | Maintaining a view of which users are connected, and their associated metadata, enables their online status to be updated in realtime. | Amazon SNS No | Socket.IO Partial It is the duty of your application to link a Socket.IO connection to a user account. Read more |
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 SNS No | Socket.IO |
Message interactions | Enables interaction with previously-sent messages, facilitating the implementation of features like message reactions and threads. | Amazon SNS No | Socket.IO Partial You would need to build the message interaction functionality yourself on top of Socket.IO. Learn more |
Message history | Enables clients to catch up on missed messages when inactive, ensuring a user doesn’t miss any important messages. | Amazon SNS Yes AWS SNS allows topic subscribers to retrieve (or replay) the archived messages back to a subscribed endpoint. This can be done by with the AWS API, SDK, AWS CloudFormation, and AWS Management Console. This functionality is only available for application-to-application (A2A) FIFO topics. Read more | Socket.IO No The Socket.IO server does not store messages. Your application has to persist messages somewhere for the clients that are not currently connected. Learn more |
Push notifications | Cross-platform push notifications make it possible to deliver important and timely messages to users even when they’re inactive. | Amazon SNS Yes AWS SNS specializes in delivering push notifications to mobile devices and other endpoints. | Socket.IO No Socket.IO not support Push notifications. You would need to build this capability yourself and/or use another library. Learn more |
Message delta compression | Minimizes bandwidth and can reduce latency, particularly in scenarios where continuous updates are sent. | Amazon SNS No | Socket.IO No |
Programmatic management | Enables the automation of provisioning, management, and testing of service resources, simplifying integration with existing development workflows such as CI. | Amazon SNS Yes | Socket.IO Yes The Socket.IO server is initialised in code. It is possible to configure the socket.IO server's configuration in code as well. Learn more |
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 SNS No AWS SNS does not offer a free tier, but has a pay-as-you-go pricing model. | Socket.IO Yes Open Source framework that uses the MIT license. |
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 SNS AWS SNS has a pay-as-you-go pricing model based on usage (number of requests and messages published). Read more | Socket.IO Free and open-source. |
Integrations & interoperability | |||
SDKs | Supporting multiple languages and platforms offers greater flexibility when building cross-platform realtime apps. | Amazon SNS
| Socket.IO Client and Server APIs only.
|
Supported realtime protocols | Support for multiple protocols provides the flexibility to choose a protocol that best suits your project’s requirements. | Amazon SNS
| Socket.IO
|
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 SNS None natively; serverless functions are available through integration with AWS Lambda. | Socket.IO No It is not possible to trigger serverless functions with Socket.IO on it's own. See this Reddit post for more info |
Streaming & queueing | Provides a dependable method to reroute messages from the service to third-party streams and queues for further processing. | Amazon SNS Partial Available through Amazon SQS. | Socket.IO No Socket.IO does not offer native queues and streaming. |
Observability services | Enables realtime monitoring and troubleshooting by offering insights into service behavior directly in your observability platform of choice. | Amazon SNS Partial AWS SNS provides an integration with Amazon CloudWatch for monitoring usage and metrics. | Socket.IO Yes The Socket.IO admin UI can be used to have an overview of the state of your Socket.IO deployment. |
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 SNS Yes Supports:
| Socket.IO No |
Quality of Service | |||
Scalability | Scalability is vital as it ensures the service can handle increased data load or users without compromising performance. | Amazon SNS No published metrics are available. | Socket.IO No published metrics. Socket.IO servers don’t communicate between them, so you need a way to route events to all clients, even if they are connected to different servers. This is made possible by using adapters, of which the Redis adapter seems to be the most popular choice. |
Guaranteed message delivery | Ensures messages are never lost during transmission, even in the presence of network disruptions. | Amazon SNS No | Socket.IO Partial By default, Socket.IO provides an "at most once" guarantee of delivery. From the client side, you can achieve an at least once guarantee with acknowledgements and timeouts. |
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 SNS No | Socket.IO |
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 SNS No AWS SNS not support exactly-once delivery semantics out of the box. It ensures at least-once delivery, but does not guarantee exactly-once delivery. | Socket.IO No At least once or at most once only. |
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 SNS 99.9%. Read more | Socket.IO No It is a library, not a platform. |
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 SNS Yes | Socket.IO No |
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 SNS Partial AWS SNS supports message durability through integration with other AWS services for multi-region replication. | Socket.IO No |
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 SNS Yes | Socket.IO No As Socket.IO is a library, the implementation of it dictates points of failure and congestion. |
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 SNS Unknown. | Socket.IO Unknown |
Security & compliance | |||
API key authentication | Simplifies the authentication code on trusted servers compared to requesting, managing, and refreshing tokens. | Amazon SNS Yes AWS SNS uses AWS IAM for managing API key authentication. | Socket.IO No |
Token-based authentication | Provides a means to securely authenticate user devices against your user management system. | Amazon SNS Yes AWS SNS uses the AWS STS (Security Token Service) for token-based authentication. | Socket.IO No No native Token based auth. It is possible to use middlewares. |
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 SNS Yes AWS SNS supports Single Sign-On (SSO) through AWS IAM and AWS SSO. | Socket.IO No No native SSO. It is possible to use middlewares. |
Rules for permissions and operations | Provides control over which users can subscribe and publish to certain channels. | Amazon SNS Yes AWS SNS permissions and operations can be managed through AWS IAM policies. | Socket.IO No |
End-to-end encryption | Ensures that the data transmitted between the client and the API server remains confidential and secure while in transit. | Amazon SNS Yes | Socket.IO No |
Encryption at rest | Ensures data stored by the service is secure and compliant, while also mitigating the risks of a data breach. | Amazon SNS Yes AWS SNS supports encryption at rest using AWS KMS (Key Management Service). | Socket.IO No |
Compliance | Compliance with regulations can impact your ability to meet legal obligations in your industry. | Amazon SNS
| Socket.IO None. |
Alternatives to Amazon SNS and Socket.IO
While both Amazon SNS and Socket.IO 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 SNS
Google Cloud Pub/Sub is a scalable messaging service that can be used to send and receive messages from applications or services.
Azure Service Bus is a fully managed message service with message queues and Pub/Sub topics.
OneSignal is a customer engagement platform that offers push notifications, messages, and email sends for businesses to manage communication with their users.
Alternatives to Socket.IO
Azure SignalR is an Azure-hosted, fully managed realtime framework built on top of an open-source software library for Microsoft ASP.NET.
Firebase Realtime Database is a cloud-hosted database by Google, allowing developers to build realtime applications for web and mobile.
PubNub is a developer API platform that powers the realtime infrastructure in apps to build engaging Virtual Spaces where online communities can connect.
Discover how Amazon SNS and Socket.IO stack up against Ably
Ably is the definitive realtime experience platform of the internet. See how we compare to Amazon SNS and Socket.IO on key dimensions such as core features, pricing, integrations, QoS, performance, and security and compliance.
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