deepstream.io vs Push Technology

	deepstream.io	Push Technology
Time to "hello world" Reviewed by 3+ independent developers Ratings were given based on the average amount of time it takes to sign up to a new account and publish the first message.	4 / 5 5 = <30 min 4 = 30 min - 1 h 3 = 1-2 h 2 = 2-4 h 1 = 4+ h View code example	4 / 5 5 = <30 min 4 = 30 min - 1 h 3 = 1-2 h 2 = 2-4 h 1 = 4+ h View code example
Demos / Tutorials A selection of online demos and tutorials so you can test and see the code in action. Explore Ably's tutorials for our pub/sub messaging platform	Getting started with HTTP Handling Data Conflicts How to use RPCs for your request/response requirements View more deepstream.io demos & tutorials	How to build a realtime chat app with Diffusion Cloud Drawing board demo JSON Delta streaming demo
Documentation Reviewed by 3+ independent developers Explore Ably's documentation for our pub/sub messaging platform	4 / 5 Getting started guides / 5 Information architecture and developer journey / 5 API reference documentation / 5 Readability, design and navigation / 5 Quality of code / 5 Breadth and quality of tutorials / 5 The deepstream.io documentation is nicely written and features several components: GitHub, guides, tutorials, docs, blog, and miscellaneous info, such as FAQs. There’s a Getting Started guide using HTTP API, JavaScript Client API, and Java Client API, with code snippets throughout. The API reference is detailed for each SDK and information architecture is pretty nice. Most sections of the documentation are well cross-linked; however, the navigation experience could be improved, especially around the API reference – some links return 404. Also, some documentation pages need to be revamped. The documentation provides tutorials for most deepstream.io features but unfortunately, there’s no demos. The documentation for the core features (data-sync, records, auth, permissions, events, rpc, etc.) is well written, but could be more detailed.	3.50 / 5 Getting started guides / 5 Information architecture and developer journey / 5 API reference documentation / 5 Readability, design and navigation / 5 Quality of code / 5 Breadth and quality of tutorials / 5 “Push Technology documentation for its Diffusion product consists of several components. First, we have a quick start guide, which is pretty decent. It’s structured to provide step-by-step guidance on how to set up Diffusion and use the APIs and the SDKs. The screen is split so that you can look at documentation and code snippets in parallel - a nice touch. Then, there’s an online manual, which is significantly more detailed, with code snippets throughout. Unfortunately, there aren’t any details in the guide about the quality of service or how to architect for scalability. There’s a detailed API reference for each SDK and comprehensive release notes. The design could be improved, as it’s a bit dry, and so could the navigation experience - some links return 404, and the various sections of the documentation aren’t cross-linked. There are just a few demos available, with no source code and only several tutorials.“
Dashboard or dev console Reviewed by 3+ independent developers Sign up for free and explore Ably's pub/sub messaging platform	4 / 5 Ease of use / 5 Stats and reports / 5 Functionality / 5 The deepstream.io dashboard might be a bit overwhelming to use or understand without documentation. The dashboard allows you to explore realtime data, configure permission, as well as view important metrics over time such as total messages used, active connections, cluster size, and CPU usage. The UI design is a bit outdated and could perhaps benefit from a revamp.	4.67 / 5 Ease of use / 5 Stats and reports / 5 Functionality / 5 “The Service Dashboard is feature-rich, and it allows you to easily create, manage, and remove resources, configure settings, and view detailed stats, such as the number of messages, the CPU load, or the topic count. There’s also a nice section in the Dashboard that allows you to test your pipeline. The user experience is mostly intuitive, and the functionality is explained well (there are many tooltips throughout). However, the UI design could perhaps benefit from a refresh, as it’s a bit outdated.“
SDKs Note: Only official SDKs were taken into account. Explore Ably's 25+ SDKs for our pub/sub messaging platform	3 SDKs Including: JavaScript Java Android	7 SDKs Including: JavaScript Android .NET
API structure Reviewed by 3+ independent developers	3 / 5 API consistency across SDKs / 5 Well structured / 5 Intuitive / 5 Simple / 5 deepstream.io tries to keep its APIs as consistent as possible across SDKs on the client side. However, the APIs are quite complex and counter-intuitive – too many methods make it not straightforward to perform operations in the same order. There’s a separate reference page for each API, which is not great. Developers need to take their time to go through the API reference to be able to use them properly. Documentation and tutorials are helpful in this regard.	3.25 / 5 API consistency across SDKs / 5 Well structured / 5 Intuitive / 5 Simple / 5 “Diffusion APIs are consistent across SDKs in the sense that operations are performed in the same order. However, the APIs are quite complex - there are tens of classes and methods, with some different naming conventions across some of the SDKs, such as JavaScript, Java, or C, which is counter-intuitive. The API references are structured and presented differently, which is not great; at least they are detailed and thorough. There are examples for all SDKs on GitHub, which is useful.”

deepstream.io

Push Technology

Getting started and developer experience

Time to "hello world"

Reviewed by 3+ independent developers

Ratings were given based on the average amount of time it takes to sign up to a new account and publish the first message.

4 / 5

5 = <30 min
4 = 30 min - 1 h
3 = 1-2 h
2 = 2-4 h
1 = 4+ h

View code example

4 / 5

5 = <30 min
4 = 30 min - 1 h
3 = 1-2 h
2 = 2-4 h
1 = 4+ h

View code example

Demos / Tutorials

A selection of online demos and tutorials so you can test and see the code in action.

Explore Ably's tutorials for our pub/sub messaging platform

Getting started with HTTP

Handling Data Conflicts

Documentation

Reviewed by 3+ independent developers

Explore Ably's documentation for our pub/sub messaging platform

4 / 5

Getting started guides / 5

Information architecture and developer journey / 5

API reference documentation / 5

Readability, design and navigation / 5

Quality of code / 5

Breadth and quality of tutorials / 5

The deepstream.io documentation is nicely written and features several components: GitHub, guides, tutorials, docs, blog, and miscellaneous info, such as FAQs. There’s a Getting Started guide using HTTP API, JavaScript Client API, and Java Client API, with code snippets throughout. The API reference is detailed for each SDK and information architecture is pretty nice. Most sections of the documentation are well cross-linked; however, the navigation experience could be improved, especially around the API reference – some links return 404. Also, some documentation pages need to be revamped. The documentation provides tutorials for most deepstream.io features but unfortunately, there’s no demos. The documentation for the core features (data-sync, records, auth, permissions, events, rpc, etc.) is well written, but could be more detailed.

3.50 / 5

Getting started guides / 5

Information architecture and developer journey / 5

API reference documentation / 5

Readability, design and navigation / 5

Quality of code / 5

Breadth and quality of tutorials / 5

“Push Technology documentation for its Diffusion product consists of several components. First, we have a quick start guide, which is pretty decent. It’s structured to provide step-by-step guidance on how to set up Diffusion and use the APIs and the SDKs. The screen is split so that you can look at documentation and code snippets in parallel - a nice touch. Then, there’s an online manual, which is significantly more detailed, with code snippets throughout. Unfortunately, there aren’t any details in the guide about the quality of service or how to architect for scalability. There’s a detailed API reference for each SDK and comprehensive release notes. The design could be improved, as it’s a bit dry, and so could the navigation experience - some links return 404, and the various sections of the documentation aren’t cross-linked. There are just a few demos available, with no source code and only several tutorials.“

Dashboard or dev console

Reviewed by 3+ independent developers

4 / 5

Ease of use / 5

Stats and reports / 5

Functionality / 5

The deepstream.io dashboard might be a bit overwhelming to use or understand without documentation. The dashboard allows you to explore realtime data, configure permission, as well as view important metrics over time such as total messages used, active connections, cluster size, and CPU usage.

The UI design is a bit outdated and could perhaps benefit from a revamp.

4.67 / 5

Ease of use / 5

Stats and reports / 5

Functionality / 5

“The Service Dashboard is feature-rich, and it allows you to easily create, manage, and remove resources, configure settings, and view detailed stats, such as the number of messages, the CPU load, or the topic count. There’s also a nice section in the Dashboard that allows you to test your pipeline. The user experience is mostly intuitive, and the functionality is explained well (there are many tooltips throughout). However, the UI design could perhaps benefit from a refresh, as it’s a bit outdated.“

SDKs

Note: Only official SDKs were taken into account.

Explore Ably's 25+ SDKs for our pub/sub messaging platform

3 SDKs

Including:

JavaScript
Java
Android

7 SDKs

Including:

JavaScript
Android
.NET

API structure

Reviewed by 3+ independent developers

3 / 5

API consistency across SDKs / 5

Well structured / 5

Intuitive / 5

Simple / 5

deepstream.io tries to keep its APIs as consistent as possible across SDKs on the client side. However, the APIs are quite complex and counter-intuitive – too many methods make it not straightforward to perform operations in the same order. There’s a separate reference page for each API, which is not great. Developers need to take their time to go through the API reference to be able to use them properly. Documentation and tutorials are helpful in this regard.

3.25 / 5

API consistency across SDKs / 5

Well structured / 5

Intuitive / 5

Simple / 5

“Diffusion APIs are consistent across SDKs in the sense that operations are performed in the same order. However, the APIs are quite complex - there are tens of classes and methods, with some different naming conventions across some of the SDKs, such as JavaScript, Java, or C, which is counter-intuitive. The API references are structured and presented differently, which is not great; at least they are detailed and thorough. There are examples for all SDKs on GitHub, which is useful.”

deepstream.io	Push Technology
// Client A function eventCallback (data) { //callback for incoming events } //Subscribing to an event client.event.subscribe ('news/sports' , eventCallback) //Removing specific callback to the event client.event.unsubscribe ('news/sports' , eventCallback) //Removing all subscriptions to the event client.event.unsubscribe ('news/sports') // Client B client.event.emit ('news/sports' , 'football is happening' ) // Client B client.event.listen ('^news /.' , (match, response) => { console.log(match) // 'news/sports' if (/ if you want to provide /) { // start publishing data via ` client.event.emit(eventName, / data */)` response.accept() response.onStop(() => { // stop publishing data }) } else { response.reject() // let deepstream ask another provider } })	// Publish session.topics.add('my-topic',diffusion.topics.TopicType.JSON); var value = { foo : 'bar' }; var result = session.topicUpdate.set('my-topic', diffusion.datatypes.json(), value); // Subscribe session.addStream('my-topic', diffusion.datatypes.json()).on('value', function(topic, specification, newValue, oldValue) { console.log(`New value for ${path}: ${newValue.get()}`); session.select('my-topic'); });

deepstream.io

Push Technology

"Hello world" code example

// Client A
function eventCallback (data) {
    //callback for incoming events 
}

//Subscribing to an event 
client.event.subscribe ('news/sports' , eventCallback)

//Removing specific callback to the event
client.event.unsubscribe ('news/sports' , eventCallback)

//Removing all subscriptions to the event
client.event.unsubscribe ('news/sports')

// Client B
client.event.emit ('news/sports' , 'football is happening' )

// Client B
client.event.listen ('^news /.*' , (match, response) => {
    console.log(match) // 'news/sports'
    if (/* if you want to provide */) { 
        // start publishing data via ` client.event.emit(eventName, /* data */)`
        response.accept()

        response.onStop(() => {
            // stop publishing data
        }) 
    } else {
        response.reject() // let deepstream ask another provider
    }
})

// Publish
session.topics.add('my-topic',diffusion.topics.TopicType.JSON);
var value = { foo : 'bar' };
var result = session.topicUpdate.set('my-topic', diffusion.datatypes.json(), value);

// Subscribe
session.addStream('my-topic', diffusion.datatypes.json()).on('value', function(topic, specification, newValue, oldValue) {
  console.log(`New value for ${path}: ${newValue.get()}`);
  session.select('my-topic');
});

	deepstream.io	Push Technology
Realtime features
Pub/Sub messaging Pub/Sub is a design pattern that lets any number of publishers (producers) push messages to channels (also known as topics). Multiple subscribers (consumers) can subscribe to a channel to consume published messages. Explore Ably's pub/sub messaging implementation
Message queues A message queue is a form of asynchronous service-to-service communication. Messages are stored on a queue until they are processed. Note that each message is only consumed by one subscriber (consumer). Explore Ably's message queues implementation
Presence Presence enables you to track the online and offline status of devices and end-users in real time and to store their state. Essential for chat apps and multiplayer games. Explore Ably's presence implementation
Message history Message history provides a means to retrieve previously published messages. For this to be possible, message data must be stored (persisted) somewhere. Explore Ably's message history implementation
Connection state recovery (stream resume) In the case of unreliable network conditions, clients may suddenly disconnect.Connection state recovery ensures that when they reconnect, the data stream resumes exactly where it left off. Explore Ably' s connection state recovery implementation		Limited Push Technology operates a recovery buffer of sent messages but if a message has been lost or is no longer in the recovery buffer the server will abort the reconnection.
Guaranteed message ordering Ordering ensures that messages are delivered to consumers in the same order that producers publish them. Explore Ably' s guaranteed message ordering implementation
Exactly-once semantics Exactly-once is a system-wide data integrity guarantee that ensures each message is delivered to consumers exactly-once. Explore Ably' s idempotent publishing implementation
Message delta compression Message delta compression enables you to only send the changes from the previous message to subscribers each time there’s an update, instead of the entire message. Useful for use cases where there is a significant degree of similarity between successive messages. Explore Ably' s message delta compression implementation
Native push notifications Native push notifications can be used to deliver messages even when clients are offline. Useful for geolocation updates or news alerts. Explore Ably's push notifications implementation
Webhooks Webhooks provide a mechanism to get messages and other types of events (such as clients entering or leaving channels) pushed to your servers over HTTP. Explore Ably's webhooks implementation	Limited deepstream.io only uses webhooks for user authentication.
Serverless functions A serverless function is essentially an isolated, single-purpose piece of code that is only executed when it’ triggered by an event. For example, you can use serverless functions to send a welcome message to clients when they become present on chat channels. Note that serverless functions are usually fully managed by cloud vendors. Explore Ably's serverless functions implementation
Built-in integrations Which popular services & systems are deepstream.io and Push Technology integrated with? Explore Ably's library of integrations	Webhooks Custom IFTTT Zapier Serverless functions AWS Lambda Cloudflare Workers Google Cloud Functions Microsoft Azure Functions Streaming Apache Kafka Apache Pulsar Amazon Kinesis Amazon SQS RabbitMQ AMQP	Webhooks Custom IFTTT Zapier Serverless functions AWS Lambda Cloudflare Workers Google Cloud Functions Microsoft Azure Functions Streaming Apache Kafka Apache Pulsar Amazon Kinesis Amazon SQS RabbitMQ AMQP
Known limits and constraints Find out practical limits, such as the maximum message size, or the maximum number of concurrent connections. Explore the practical limits of the Ably pub/sub messaging platform	Publisher throughput 160.000-200.000 updates per second for Single Node 4,000,000,000 messages per hour for Cluster Maximum message size 1MB Maximum number of topics Unknown Maximum number of connections 250 for Single Node 750 for Cluster	Publisher throughput Unknown Maximum message size Unknown Maximum number of topics Unlimited (only applies to Enterprise customers). Maximum number of connections Unknown

Supported development platforms, languages, open protocols and cloud models
Development platforms & operating systems Which popular development platforms and operating systems do deepstream.io and Push Technology support via official SDKs? Explore the development platforms supported by Ably	Android Java / JVM iOS macOS iPadOS tvOS watchOS Mono .NET	Android Java / JVM iOS macOS iPadOS tvOS watchOS Mono .NET
Languages Which popular programming languages do deepstream.io and Push Technology support via offical SDKs? Explore the programming languages supported by Ably	JavaScript Node.js TypeScript Java Objective-C Swift Go PHP Python Ruby Flutter Clojure Scala	JavaScript Node.js TypeScript Java Objective-C Swift Go PHP Python Ruby Flutter Clojure Scala
Open protocols Which popular open protocols do deepstream.io and Push Technology support? Explore the open protocols supported by Ably	WebSocket HTTP AMQP MQTT STOMP SSE Webhooks	WebSocket HTTP AMQP MQTT STOMP SSE Webhooks
Cloud models Which popular cloud models do deepstream.io and Push Technology support?	Self-hosted Cloud-managed Serverless Globally-distributed	Self-hosted Cloud-managed Serverless Globally-distributed

Global and reliable edge service
Edge messaging network with latency-based routing Latency-based routing ensures that clients are always routed to the nearest datacenter and point of presence. Explore Ably's routing mechanism that mitigates network and DNS issues
Multi-region data replication (message durability) Multi-region data replication (storage) protects against single points of failure and ensures message data durability. Learn how Ably ensures message durability	Limited deepstream.io stores data in a combination of storage and cache layers for distribution across multiple nodes. However this platform also relies on shared devices such as a Redis for a message bus which itself (Redis layer) might become a point of failure and congestion.	Limited Only available for Enterprise customers.
Uptime SLAs Here’s what the most common SLAs amount to in terms of downtime over a calendar year: 99.999% SLA = 5m 15s downtime per year 99.99% SLA = 52m 35s downtime per year 99.95% SLA = 4h 22m 58s downtime per year 99.9% SLA = 8h 45m 56s downtime per year 99% SLA = 3d 15h 39m 29s downtime per year Source: https://uptime.is/	No specific uptime SLA	99.9%
Quality of Service What QoS guarantees do deepstream.io and Push Technology provide natively? Explore Ably's availability and uptime guarantees for our pub/sub messaging platform	Multi-region data replication (storage) Exactly-once semantics Guaranteed message ordering Connection state recovery (stream resume)	Multi-region data replication (storage) Exactly-once semantics Guaranteed message ordering Connection state recovery (stream resume)

Security
API key authentication The simplest way to authenticate. Involves using private API keys that you can usually create and edit via a dashboard. Recommended to be used server-side, as private API keys shouldn’t be shared with untrusted parties. Explore Ably's implementation of API key authentication
Token-based authentication Which popular token-based authentication mechanisms do deepstream.io and Push Technology support? Note that token-based authentication is usually the recommended strategy on the client-side as it provides more fine-grained access control and limits the risk of credentials being compromised. Explore Ably's implementation of token-based authentication	Ephemeral tokens JWTs	Ephemeral tokens JWTs
Configurable rules and permissions Which types of configurable rules and permissions do deepstream.io and Push Technology support? Explore Ably's configurable rules and permissions	API keys rules and permissions Operation rules and permissions Admin rights	API keys rules and permissions Operation rules and permissions Admin rights
Message encryption Which types of message encryption do deepstream.io and Push Technology support? Explore Ably's message encryption mechanisms	Encrypted at rest Encrypted in transit Message payload encryption	Encrypted at rest Encrypted in transit Message payload encryption
Formal certifications Which formal certifications are deepstream.io and Push Technology compliant with? Explore Ably's security and compliance for our pub/sub messaging platform	SOC 2 TYPE I SOC 2 Type II HIPAA EU GDPR	SOC 2 TYPE I SOC 2 Type II HIPAA EU GDPR

Pricing & Support
Free package What do the free packages offered by deepstream.io and Push Technology consist of? Explore Ably's free package for our pub/sub messaging platform	N/A	The free package includes 3 million monthly messages, 100 peak connections, unlimited topics, access to all major features and adapters, and basic support.
Pricing model How are the deepstream.io and Push Technology pricing models calculated? Explore Ably's pricing model for our pub/sub messaging platform	deepstream.io pricing is usage-based and calculated per hour. $0.052 per hour for a six-instance cluster on AWS EC2 t2.medium $0.008 per hour for a single node on cache.t2.medium It’s unclear how pricing is calculated for the Enterprise package.	The basic pricing for the Business package starts at $49 per month. In addition, there are charges for the number of messages - $ 0.99 per million messages and for the number of connections - $ 0.01 per connection. It’s unclear how pricing is calculated for the Enterprise package.
Enterprise package What benefits do the deepstream.io and Push Technology enterprise packages offer? Explore Ably's enterprise package for our pub/sub messaging platform	No Enterprise package is explicitly specified. However, it can be obtained by contacting the vendor directly.	The Enterprise package benefits include enterprise scale and performance, cross-region replication, configurable cluster size, bespoke performance tuning, bespoke packages for all sizes.
Community Reviewed by 3+ independent developers Explore Ably's community support channel for our pub/sub messaging platform	5 / 5 Presence on multiple channels / 5 Size and activity / 5 deepstream.io has a strong community presence on various channels, such as Stack Overflow, Slack, GitHub, and Twitter. Their community is active, approachable, and helpful, and generates a lot of content: 110 repositories, 6.8K stars, and 383 forks on GitHub. Similarly, there are over 100 questions on Stack Overflow, 690 users on Slack and more than 1000 followers on Twitter. There are no events, and no community presence on Discourse, and Gitter.	1 / 5 Presence on multiple channels / 5 Size and activity / 5 “Push Technology has a community forum, but there’s a very small number of posts and an even smaller number of followers (a maximum of 11 followers per forum category). Similarly, there are maybe 20 threads on Stack Overflow, and basically no community activity on GitHub. No presence on Gitter or Discourse. It’s essentially a non-existent community.”
Support What types of support options and response times do deepstream.io and Push Technology offer? Explore Ably's support options for our pub/sub messaging platform	General Support Options Email, technical documentation, community support. Response time < 24 hours for non-technical queries < 1 hour for production system down incident (only applies to Enterprise support package)	General support options Email, web support, documentation, developer hub, phone (only for Platinum package), screenshare (Gold and Platinum packages). Enterprise support The Platinum package is the equivalent of enterprise support. It includes early access to beta features and a dedicated account manager. Response time 2 hours for Platinum package 3 hour minimum for Live Events package 24 hours for Gold package Best effort response times for the Basic package

Pricing & Support

Free package

What do the free packages offered by deepstream.io and Push Technology consist of?

Explore Ably's free package for our pub/sub messaging platform

N/A

The free package includes 3 million monthly messages, 100 peak connections, unlimited topics, access to all major features and adapters, and basic support.

Pricing model

How are the deepstream.io and Push Technology pricing models calculated?

Explore Ably's pricing model for our pub/sub messaging platform

deepstream.io pricing is usage-based and calculated per hour.

$0.052 per hour for a six-instance cluster on AWS EC2 t2.medium

$0.008 per hour for a single node on cache.t2.medium

It’s unclear how pricing is calculated for the Enterprise package.

The basic pricing for the Business package starts at $49 per month.

In addition, there are charges for the number of messages - $ 0.99 per million messages and for the number of connections - $ 0.01 per connection.

It’s unclear how pricing is calculated for the Enterprise package.

Enterprise package

What benefits do the deepstream.io and Push Technology enterprise packages offer?

Explore Ably's enterprise package for our pub/sub messaging platform

No Enterprise package is explicitly specified. However, it can be obtained by contacting the vendor directly.

The Enterprise package benefits include enterprise scale and performance, cross-region replication, configurable cluster size, bespoke performance tuning, bespoke packages for all sizes.

Community

Reviewed by 3+ independent developers

Explore Ably's community support channel for our pub/sub messaging platform

5 / 5

Presence on multiple channels / 5

Size and activity / 5

deepstream.io has a strong community presence on various channels, such as Stack Overflow, Slack, GitHub, and Twitter. Their community is active, approachable, and helpful, and generates a lot of content: 110 repositories, 6.8K stars, and 383 forks on GitHub. Similarly, there are over 100 questions on Stack Overflow, 690 users on Slack and more than 1000 followers on Twitter. There are no events, and no community presence on Discourse, and Gitter.

1 / 5

Presence on multiple channels / 5

Size and activity / 5

“Push Technology has a community forum, but there’s a very small number of posts and an even smaller number of followers (a maximum of 11 followers per forum category). Similarly, there are maybe 20 threads on Stack Overflow, and basically no community activity on GitHub. No presence on Gitter or Discourse. It’s essentially a non-existent community.”

Support

What types of support options and response times do deepstream.io and Push Technology offer?

Explore Ably's support options for our pub/sub messaging platform

General Support Options

Email, technical documentation, community support.

Response time

< 24 hours for non-technical queries

< 1 hour for production system down incident (only applies to Enterprise support package)

General support options

Email, web support, documentation, developer hub, phone (only for Platinum package), screenshare (Gold and Platinum packages).

Enterprise support

The Platinum package is the equivalent of enterprise support. It includes early access to beta features and a dedicated account manager.

Response time

2 hours for Platinum package

3 hour minimum for Live Events package

24 hours for Gold package

Best effort response times for the Basic package

Disclaimer: The information presented for deepstream.io was last updated on 28 February 2021 and on 15 December 2020 for Push Technology. It is possible that some details may now be out of date. If you think that’s the case, please let us know so we can update them. In any case, you should not rely solely on the information presented here and must check with each provider before deciding to integrate or buy any of these two solutions.

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