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PubNub vs SignalR

Discover how PubNub compares to SignalR, and understand which is right for your use case, based on dimensions such as core features, pricing, reliability, and scalability.

What is PubNub?

PubNub is a developer API platform that powers the real-time infrastructure in apps to build engaging Virtual Spaces where online communities can connect. It can serve as the foundation for online chat, live events, geolocation, remote IoT control, and realtime updates.

Suitable for:

  • Chat
  • Live audience engagement
  • Multi-user collaboration
  • Device control
  • Data streaming
  • Geolocation /dispatch

Not suitable for:

  • Audio and video

Pros:

  • Highly scalable
  • Global edge network

Cons:

  • No message delivery guarantees
  • No message ordering guarantees
  • No exactly-once delivery guarantees
  • No WebSockets support
  • Reduced message continuity when clients are disconnected
SignalR

What is SignalR?

SignalR is an open-source library that simplifies adding real-time web functionality to apps. It is integrated into the ASP.NET Core web development stack and provides a mechanism for two-way remote procedure calls between client and server.

Suitable for:

  • Apps that require high frequency updates from the server, like gaming, social networks, voting, auction, maps, and GPS apps.
  • Dashboards and monitoring apps
  • Collaborative apps
  • Apps that require notifications

Not suitable for:

-Stateless applications -Apps with high scalability requirements -Apps with high throughput requirements

Pros:

  • Open source
  • Free to use

Cons:

  • Self-hosted
  • Complex to manage

Compare PubNub and SignalR

Let’s compare PubNub and SignalR, 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 PubNub and SignalR. The content was last updated on 1 Aug 2024 for PubNub and on 29 Jul 2024 for SignalR. 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 If you do find anything incorrect or out of date, then please contact us.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.

PubNub

Yes

SignalR

Partial

The SignalR SDKs do not provide a topic abstraction out of the box, but they provide a "groups" abstraction which lets you implement something similar.

Read more
Chat capabilities

Accelerates the time to implement rich chat experiences with features such as read receipts, typing indicators, and more.

SignalR

Yes

SignalR (ASP.net) allows you to implement chat capabilities.

Read more
Collaboration capabilities

Enables you to quickly integrate realtime collaborative features like live cursors, member location, avatar stacks, and component locking.

PubNub

Partial

Via Presence, no dedicated SDK to make it easier.

SignalR

No

State sync capabilities

Enables realtime data synchronization across devices and users, ensuring a cohesive and up-to-date user experience.

PubNub

Yes

SignalR

No

Presence

Maintaining a view of which users are connected, and their associated metadata, enables their online status to be updated in realtime.

PubNub

Yes

SignalR
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.

PubNub

Yes

Via presence.

See Presence docs
SignalR

No

Message interactions

Enables interaction with previously-sent messages, facilitating the implementation of features like message reactions and threads.

PubNub

Yes

SignalR

No

Message history

Enables clients to catch up on missed messages when inactive, ensuring a user doesn’t miss any important messages.

PubNub

Yes

SignalR

No

Push notifications

Cross-platform push notifications make it possible to deliver important and timely messages to users even when they’re inactive.

PubNub

Yes

SignalR

No

Microsoft Azure Web PubSub has no native push notification functionality. Microsoft has a separate service for this - Azure Notification Hubs.

Read more
Message delta compression

Minimizes bandwidth and can reduce latency, particularly in scenarios where continuous updates are sent.

PubNub

No

SignalR

No

Programmatic management

Enables the automation of provisioning, management, and testing of service resources, simplifying integration with existing development workflows such as CI.

PubNub

No

SignalR

No

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.

PubNub

Yes

SignalR

Yes

Self-hosted and free.

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.

PubNub

PubNub offers Free, Starter, and Pro packages. Their support packages, separate from their standard plans, also include an Enterprise option.

See the pricing page
SignalR

N/A (self-hosted)

Integrations & interoperability
SDKs

Supporting multiple languages and platforms offers greater flexibility when building cross-platform realtime apps.

PubNub
  • REST API
  • Asyncio
  • C-Core
  • C-Sharp
  • Cocoa Objective-C
  • Cocoa Swift
  • Dart
  • FreeRTOS
  • Go
  • Java
  • JavaScript
  • Kotlin
  • Lua
  • Mbed
  • MQTT
  • Objective-C
  • PHP
  • POSIX C
  • POSIX C++
  • Python
  • React
  • Redux
  • Ruby
  • Rust
  • Swift
  • Unity
  • Windows C
  • Windows C++

Source: SDKs

SignalR

Client SDKs:

  • ASP.NET Core
  • Java
  • JavaScript (browser, Node)
  • C++ (experimental)
  • Swift (experimental)

Server SDKs:

  • ASP.NET Core
Supported realtime protocols

Support for multiple protocols provides the flexibility to choose a protocol that best suits your project’s requirements.

PubNub
  • HTTP
  • MQTT
  • Fallback to Comet (XHR) and Long Polling for older browsers

PubNub uses HTTP as the transport for their client libraries. A WebSocket compliant interface is provided in some libraries, however this is just a wrapper around an underlying HTTP transport.

SignalR
  • WebSockets
  • Server-sent events (SSEs)
  • Long polling
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.

PubNub
  • PubNubFunctions - proprietary functions

PubNub allows you to run code on its own platform using proprietary PubNub Functions in the form of “Blocks”. The code you can run in Blocks is limited to the Javascript API available in PubNub’s system.

SignalR

None.

Streaming & queueing

Provides a dependable method to reroute messages from the service to third-party streams and queues for further processing.

PubNub

Egress:

  • AWS Kinesis
  • AWS SQS
  • Apache Pulsar
  • RabbitMQ
  • AMQP
  • Kafka

Ingress:

  • Kafka
SignalR

No

Observability services

Enables realtime monitoring and troubleshooting by offering insights into service behavior directly in your observability platform of choice.

PubNub

Yes

PubNub provides integrations with Datadog and NewRelic

SignalR

Partial

SignalR is integrated with ASP.net Core metrics, and these can be reported to a monitoring system at regular intervals.

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.

PubNub

PubNub provides a Command Line Interface (CLI) specifically for managing and deploying PubNub Functions.

SignalR

No

Self-hosted, so you will have to implement your own.

Quality of Service
Scalability

Scalability is vital as it ensures the service can handle increased data load or users without compromising performance.

PubNub
  • 2 trillion monthly transactions
  • 800 million device connections monthly
  • Under 100 milliseconds delivery
  • 99.999% reliability

Source: Edge messaging solutions page

SignalR

N/A (self-hosted)

Guaranteed message delivery

Ensures messages are never lost during transmission, even in the presence of network disruptions.

PubNub

No

SignalR

No

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.

PubNub

No

SignalR

No

Exactly-once message delivery

Guarantees that each message is processed exactly once, preventing data inconsistencies that can arise from duplicate processing or missing messages.

PubNub

No

SignalR

No

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.

PubNub

99.999%

SignalR

N/A

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.

PubNub

Yes

SignalR

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.

PubNub

Yes

SignalR

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.

PubNub

Yes

SignalR

No

Latency

Low latency is crucial for realtime apps as it ensures swift and efficient data transmissions, providing a smoother and more responsive user experience.

PubNub

<100 milliseconds delivery

SignalR

N/A (self-hosted)

Security & compliance
API key authentication

Simplifies the authentication code on trusted servers compared to requesting, managing, and refreshing tokens.

PubNub

No

PubNub does not provide configurable private key permissions. It uses a different model where each client’s access is configured with the PubNub Access Manager (PAM).

SignalR

No

Token-based authentication

Provides a means to securely authenticate user devices against your user management system.

PubNub

Yes

SignalR

Yes

It is possible to use token based authentication with ASP.net Core.

Read more
Single Sign-On (SSO) authentication

SSO streamlines login processes, boosts security by minimizing password use, and meets compliance needs for secure data access management.

PubNub

Yes

Google and SSO

SignalR

Yes

This is possible in conjunction with an identity platform like Microsoft Entra.

Read more
Rules for permissions and operations

Provides control over which users can subscribe and publish to certain channels.

SignalR

Yes

You can restrict access to hubs and hub methods to users matching specific authorization policies.

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.

PubNub

Yes

All customer data stored within PubNub is encrypted in transit over public networks using TLS 1.2+. Customer data stored in PubNub cloud products and services is AES-256 encrypted at rest.

SignalR

No

You would need to implement this yourself.

Encryption at rest

Ensures data stored by the service is secure and compliant, while also mitigating the risks of a data breach.

PubNub

Yes

SignalR

No

Compliance

Compliance with regulations can impact your ability to meet legal obligations in your industry.

PubNub
  • HIPAA compliant
  • GDPR compliant
  • SOC2 type 2 compliant
  • CCPA compliant
SignalR

N/A

Alternatives to PubNub and SignalR

Whilst both PubNub and SignalR 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 PubNub

Pusher is a first-generation pub/sub messaging service that provides bi-directional hosted APIs for adding realtime features to applications.

Socket.IO is a library that provides realtime, bi-directional communication between clients and servers. It allows the management of connections, sending and receiving messages, and more.

tech provider image

SignalR is an open-source library that simplifies adding real-time web functionality to ASP.NET Core web apps.

See more alternatives to PubNub

Alternatives to SignalR

Socket.IO is a library that provides realtime, bi-directional communication between clients and servers. It allows the management of connections, sending and receiving messages, and more.

tech provider image

Microsoft Azure Web PubSub is a fully managed PubSub offering. It is available as part of Microsoft's Azure Cloud Computing platform.

Pusher is a first-generation pub/sub messaging service that provides bi-directional hosted APIs for adding realtime features to applications.

Discover how PubNub and SignalR stack up against Ably

Ably is the definitive realtime experience platform of the internet. See how we compare to PubNub and SignalR on key dimensions such as core features, pricing, integrations, QoS, performance, and security and compliance.

Try Ably for free to discover the benefits for yourself

Ably has built reliable realtime infrastructure so you don’t have to. On our free plan you benefit from:

  • 6M monthly messages
  • 200 concurrent channels
  • 200 concurrent connections