VAK

Real-Time Phoenix: only the first 3 responses are displayed on the console (p.101)

Here is a scenario of cyclic sending messages and receiving responses via slowStatsChannel.
The transport accepts all 5 responses, but only the first 3 responses that meet the 10s interval are displayed on the console, as seen in DevTools.
My understanding is that a packet transaction has a lifetime, after which the packets are accepted but are not passed to the processing script. This is a tricky disconcerting point for those who are new to real-time network programming.

1 comment

/book-real-time-phoenix #suggestion

0 445 1

2023-01-05 15:06:11 UTC

First Post!

sb8244

Author of From Ruby to Elixir and Real-Time Phoenix

Just to clarify, do you mean this lifetime is implemented in Phoenix JS lib, or somewhere else?

The packets transmitted over the channel’s WebSocket are not delayed at all. It’s the request/response lifecycle that’s delayed inside of the Channel’s logic (via Process.sleep). So, when a message is sent, it’s going to be sent as fast as possible from client → server and server → client.

WebSocket itself does not have the concept of request/response lifecycle, so that’s all implemented by Phoenix’s libraries.

Post #2

Where Next?

View thread on forum

View Real Time Phoenix's book portal

Post errata for this book

Post a suggestion for this book

Post a question about this book

Post a review about this book

Home PragProg Customers

/book-real-time-phoenix #suggestion

0 445 1

Last post

Popular Pragmatic Bookshelf topics

PragProg Customers

The Definitive ANTLR 4 Reference: Program deprecation warning

page 37 ANTLRInputStream input = new ANTLRInputStream(is); as of ANTLR 4 .8 should be: CharStream stream = CharStreams.fromStream(i...

#errata /book-the-definitive-antlr-4-reference

4 987 0

2020-07-05 23:04:12 UTC

New

PragProg Customers

The Cucumber for Java Book:

Hello! On page xix of the preface, it says there is a community forum "… for help if your’re stuck on one of the exercises in this book… ...

#question /book-the-cucumber-for-java-book

3 1143 1

2021-01-12 18:03:10 UTC

New

PragProg Customers

Distributed Services with Go: Chapter 1 Suggestions

Hi Travis! Thank you for the cool book! :slight_smile: I made a list of issues and thought I could post them chapter by chapter. I’m rev...

#errata /book-distributed-services-with-go

2 1185 3

2021-11-05 17:53:55 UTC

New

PragProg Customers

Modern CSS with Tailwind: can’t setup the Rails source code

I can’t setup the Rails source code. This happens in a working directory containing multiple (postgres) Rails apps. With: ruby-3.0.0 s...

#question /book-modern-css-with-tailwind

0 1280 3

2021-03-27 15:29:34 UTC

New

PragProg Customers

A Common-Sense Guide to Data Structures and Algorithms, Second Edition: erroneous extra space complexity (page400)

A Common-Sense Guide to Data Structures and Algorithms, Second Edition by Jay Wengrow @jaywengrow Hi, I have the paperback version of t...

#errata /book-a-common-sense-guide-to-data-structures-and-algorithms-second-edition

4 1180 2

2021-07-27 21:37:42 UTC

New

PragProg Customers

A Common-Sense Guide to Data Structures and Algorithms, Second Edition: (pg460)

Hello! Thanks for the great book. I was attempting the Trie (chap 17) exercises and for number 4 the solution provided for the autocorre...

#errata /book-a-common-sense-guide-to-data-structures-and-algorithms-second-edition

0 1157 3

2023-03-10 05:02:03 UTC

New

PragProg Customers

Python Testing with pytest, Second Edition: cards pip install error (page 12)

#book-python-testing-with-pytest-second-edition Hi. Thanks for writing the book. I am just learning so this might just of been an issue ...

#errata /book-python-testing-with-pytest-second-edition

4 1191 3

2021-07-03 13:40:39 UTC

New

PragProg Customers

The Ray Tracer Challenge: cannot pass scaling test (page 69-70)

The test is as follows: Scenario: Intersecting a scaled sphere with a ray Given r ← ray(point(0, 0, -5), vector(0, 0, 1)) And s ← sphere...

#question /book-the-ray-tracer-challenge

1 1093 4

2022-07-27 09:47:44 UTC

New

PragProg Customers

Hands on Rust: Need help with error - thread 'main' panicked at 'Failed to load texture

Hi, I need some help, I’m new to rust and was learning through your book. but I got stuck at the last stage of distribution. Whenever I t...

#question /book-hands-on-rust

3 1989 5

2022-12-03 00:17:31 UTC

New

PragProg Customers

Programming Phoenix LiveView: PentoWeb.LayoutView errata (56)

root_layout: {PentoWeb.LayoutView, :root}, This results in the following following error: no “root” html template defined for PentoWeb...

#errata /book-programming-phoenix-liveview

8 1094 4

2023-10-22 17:25:26 UTC

New

Other popular topics

General Dev>Learning Resources

The Pragmatic Programmer, 20th Anniversary Edition

Andy and Dave wrote this influential, classic book to help their clients create better software and rediscover the joy of coding. Almost ...

pragprog.com

#pragprog #published-book /book-the-pragmatic-programmer-20th-anniversary-edition

4 4782 0

2020-04-18 18:22:46 UTC

New

General Dev>Hardware

BIIP MT3 Extended 2048 Custom Keycap Set (Drop)

This looks like a stunning keycap set :orange_heart: A LEGENDARY KEYBOARD LIVES ON When you bought an Apple Macintosh computer in the e...

/keyboards #apple #keycaps #mechanical-keyboards

14 6713 7

2020-12-12 19:58:26 UTC

New

Backend>Chat

How to install Ruby 3 with ASDF

In case anyone else is wondering why Ruby 3 doesn’t show when you do asdf list-all ruby :man_facepalming: do this first: asdf plugin-upd...

/ruby #asdf

11 5961 4

2021-02-02 08:02:13 UTC

New

Backend>Learning Resources

Concurrent Data Processing in Elixir

Learn different ways of writing concurrent code in Elixir and increase your application's performance, without sacrificing scalability or...

pragprog.com

#pragprog /elixir #published-book /book-concurrent-data-processing-in-elixir

78 6059 24

2021-09-04 12:35:42 UTC

New

Backend>Learning Resources

Effective Haskell

Build efficient applications that exploit the unique benefits of a pure functional language, learning from an engineer who uses Haskell t...

pragprog.com

#pragprog /haskell #published-book /book-effective-haskell

15 10218 1

2022-02-16 10:09:51 UTC

New

General Dev>In The News

Review of Linux on Minisforum V3 AMD Ryzen Tablet

A Brief Review of the Minisforum V3 AMD Tablet. Update: I have created an awesome-minisforum-v3 GitHub repository to list information fo...

mudkip.me

#linux #review #amd

0 4635 0

2024-06-24 02:26:38 UTC

New

Backend>Learning Resources

Agile Web Development with Rails 8

Get the comprehensive, insider information you need for Rails 8 with the new edition of this award-winning classic. Sam Ruby @rubys ...

pragprog.com

#pragprog #web-development /ruby /rails #published-book /book-agile-web-development-with-rails-8

12 7404 7

2025-03-27 18:33:39 UTC

New

Backend>Learning Resources

Ash Framework

Explore the power of Ash Framework by modeling and building the domain for a real-world web application. Rebecca Le @sevenseacat and ...

pragprog.com

#pragprog /elixir #published-book /ash /book-ash-framework

15 7555 9

2025-02-06 12:19:21 UTC

New

AI>Questions

What are the best text-to-speech ai generation tools that you can run locally?

Background Lately I am in a quest to find a good quality TTS ai generation tool to run locally in order to create audio for some videos I...

#ai #text-to-speech

6 12337 3

2025-03-24 16:48:39 UTC

New

General Dev>Reviews

Keyboard Review: UHK60V2 vs Defy vs Voyager vs Glove80 vs Svalboard

Ok, well here are some thoughts and opinions on some of the ergonomic keyboards I have, I guess like mini review of each that I use enoug...

/keyboards #uhk60v2 #defy #voyager #glove80 #svalboard

5 5681 7

2025-04-21 21:44:45 UTC

New

Real-Time Phoenix: only the first 3 responses are displayed on the console (p.101)

VAK

Real-Time Phoenix: only the first 3 responses are displayed on the console (p.101)