Ably vs Cloudflare Durable Objects
Discover how Cloudflare Durable Objects compares to Ably, and understand which is right for your use case, based on dimensions such as core features, pricing, reliability, and scalability.
What is Ably?
Ably is a realtime experience platform that provides APIs and SDKs to power realtime functionality - with no realtime infrastructure to build and maintain. Our application building blocks and integrations enable developers to quickly create live experiences from live chat and data broadcast, to collaborative UXs and notifications.
What is Cloudflare Durable Objects ?
Cloudflare Durable Objects provides an easy way to manage stateful objects with low-latency access and real-time updates. It enables developers to create collaborative, real-time applications using WebSocket connections, ensuring data persistence and consistent performance across distributed clients.
Compare Ably and Cloudflare Durable Objects
Let’s compare Ably and Cloudflare Durable Objects , 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 Ably and Cloudflare Durable Objects . The content was last updated on 1 Aug 2024 for Ably and on 2 Aug 2024 for Cloudflare Durable Objects . 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 If you do find anything incorrect or out of date, then please contact us.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. | Ably Yes Ably provides robust pub/sub messaging capabilities over serverless WebSockets. | Cloudflare Durable Objects Partial Cloudflare Durable Objects does not have built-in pub/sub. However, Cloudflare has an MQTT-powered pub/sub service in private beta which can be integrated with Durable Objects. Read more |
Chat capabilities | Accelerates the time to implement rich chat experiences with features such as read receipts, typing indicators, and more. | Ably Partial It's possible to use Ably Pub/Sub to build chat applications today, as many customers do. A new product to make this seamless, idiomatic and help accelerate time-to-market is under active development. | Cloudflare Durable Objects Partial Cloudflare Durable Objects can implement some chat features, but some require additional Cloudflare services or custom development. File sharing would require integration with Cloudflare R2 for file storage. |
Collaboration capabilities | Enables you to quickly integrate realtime collaborative features like live cursors, member location, avatar stacks, and component locking. | Ably Yes The Spaces SDK provides an opinionated set of abstractions for collaborative environments including live cursors, avatar stacks and component locking. Learn more | Cloudflare Durable Objects Partial Cloudflare Durable Objects can support collaboration capabilities, but require integration with storage services like Cloudflare Workers KV for features like avatar stacks and location data. |
State sync capabilities | Enables realtime data synchronization across devices and users, ensuring a cohesive and up-to-date user experience. | Ably Yes Ably provides a self-hostable and managed database connector to stream updates over our serverless WebSocket platform. Ably also provides the Models SDK for seamless connector interactions. Learn more | Cloudflare Durable Objects Yes |
Presence | Maintaining a view of which users are connected, and their associated metadata, enables their online status to be updated in realtime. | Ably Yes | Cloudflare Durable Objects No Cloudflare Durable Objects does not natively support presence; it requires custom implementation. |
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. | Ably Yes | Cloudflare Durable Objects No |
Message interactions | Enables interaction with previously-sent messages, facilitating the implementation of features like message reactions and threads. | Ably Partial Message interactions are natively supported in ably-js. There is not currently any API support for retrieving messages and their interactions efficiently from the Realtime service (under development). Learn more | Cloudflare Durable Objects No |
Message history | Enables clients to catch up on missed messages when inactive, ensuring a user doesn’t miss any important messages. | Ably Yes | Cloudflare Durable Objects No |
Push notifications | Cross-platform push notifications make it possible to deliver important and timely messages to users even when they’re inactive. | Ably Yes Support for Android and iOS push notifications. Improved web-push for browsers currently in progress. | Cloudflare Durable Objects No |
Message delta compression | Minimizes bandwidth and can reduce latency, particularly in scenarios where continuous updates are sent. | Ably Yes Broadcast changes efficiently with our binary deltas, reducing bandwidth consumption by typically up to 95%. | Cloudflare Durable Objects No Cloudflare Durable Objects supports the Brotli and gzip compression algorithms for all responses, rather than delta compression. |
Programmatic management | Enables the automation of provisioning, management, and testing of service resources, simplifying integration with existing development workflows such as CI. | Ably Yes | Cloudflare Durable Objects Yes Programmatic management is possible through the Durable Objects REST API. |
| 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. | Ably Yes | Cloudflare Durable Objects 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. | Ably
| Cloudflare Durable Objects Cloudflare Durable Objects is only available on a pay-as-you-go plan. The plan offers 1 million requests and then $0.15/million requests. Connections to Durable Objects are billed as one request. Read more |
| Integrations & interoperability | |||
SDKs | Supporting multiple languages and platforms offers greater flexibility when building cross-platform realtime apps. | Ably
| Cloudflare Durable Objects
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Supported realtime protocols | Support for multiple protocols provides the flexibility to choose a protocol that best suits your project’s requirements. | Ably
| Cloudflare Durable Objects
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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. | Ably
| Cloudflare Durable Objects
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Streaming & queueing | Provides a dependable method to reroute messages from the service to third-party streams and queues for further processing. | Ably Egress:
Ingress:
The Database Connector is designed for any database in the SQL-family, but at the moment only supports Postgres. Please contact us if you want support in other databases. | Cloudflare Durable Objects No Cloudflare Durable Objects itself doesn't directly support specific message brokers or streaming platforms. Instead, it provides a runtime environment where you can implement your own logic. |
Observability services | Enables realtime monitoring and troubleshooting by offering insights into service behavior directly in your observability platform of choice. | Ably Yes | Cloudflare Durable Objects Partial For observability, Cloudflare Durable Objects can be integrated with Baselime, or can be retrieved with Cloudflare's GraphQL Analytics API. 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. | Ably
| Cloudflare Durable Objects Yes Supports:
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| Quality of Service | |||
Scalability | Scalability is vital as it ensures the service can handle increased data load or users without compromising performance. | Ably
| Cloudflare Durable Objects Durable Objects scale horizontally across many objects as needed. Each single object can handle up to 1,000 requests per second. Read more |
Guaranteed message delivery | Ensures messages are never lost during transmission, even in the presence of network disruptions. | Ably Yes | Cloudflare Durable Objects Partial Cloudflare Durable Objects requires integration with Cloudflare Queues to achieve guaranteed message delivery. Read more |
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. | Ably Yes | Cloudflare Durable Objects Partial Cloudflare Durable Objects requires integration with Cloudflare Queues to achieve guaranteed message ordering. 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. | Ably Yes | Cloudflare Durable Objects Partial Cloudflare Durable Objects requires integration with Cloudflare Queues to achieve exactly-once message delivery. 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. | Ably 99.999% | Cloudflare Durable Objects Cloudflare offers Business customers a 100% uptime SLA with service credits for any failures, while Enterprise customers have separate agreements. 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. | Ably Yes All Ably customer data runs across all our 7 geographically-distributed core routing datacenters by default. Ably's network of 385 edge acceleration points-of-presence is growing day by day. | Cloudflare Durable Objects 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. | Ably Yes | Cloudflare Durable Objects Yes Read more |
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. | Ably Yes | Cloudflare Durable Objects 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. | Ably <50ms round trip latency for the 99th percentile; <35ms latency once traffic arrives within AWS | Cloudflare Durable Objects Unknown. |
| Security & compliance | |||
API key authentication | Simplifies the authentication code on trusted servers compared to requesting, managing, and refreshing tokens. | Ably Yes | Cloudflare Durable Objects Yes |
Token-based authentication | Provides a means to securely authenticate user devices against your user management system. | Ably Yes | Cloudflare Durable Objects No |
Single Sign-On (SSO) authentication | SSO streamlines login processes, boosts security by minimizing password use, and meets compliance needs for secure data access management. | Ably Yes | Cloudflare Durable Objects No |
Rules for permissions and operations | Provides control over which users can subscribe and publish to certain channels. | Ably Yes | Cloudflare Durable Objects No |
End-to-end encryption | Ensures that the data transmitted between the client and the API server remains confidential and secure while in transit. | Ably Yes Ably offers SSL/TLS encryption and 256-bit AES encryption using private keys. Message payloads can only be decrypted by other clients that share your secret key. Learn more about Ably's encryption | Cloudflare Durable Objects Yes Data in transit is encrypted via TLS/SSL. |
Encryption at rest | Ensures data stored by the service is secure and compliant, while also mitigating the risks of a data breach. | Ably Yes | Cloudflare Durable Objects Yes Cloudflare encrypts all users' data at rest using the AES-256 standard. |
Compliance | Compliance with regulations can impact your ability to meet legal obligations in your industry. | Ably
Ably also offers EU and US-only data storage. | Cloudflare Durable Objects
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Hear from companies gaining their realtime advantage with AblyThe core infrastructure for delivering live sports data to our customers is Ably. We sleep easier at night knowing it can be relied on for consistent low latency and message integrity at scale.”
Gary Williams
IT Infrastructure Team Lead
Ably immediately solved our issues around the user experience and scale. It supports our customers’ stringent expectations as well as future product development.”
Max Freiert
Product Group Lead
Ably copes easily with big loads. We don’t have to worry about stability, even when we get huge traffic spikes.”
Johan Bengtsson
CTO
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
