lukebakken

Issue 16347 - per-protocol connection limits implementation plan

Context

GitHub issue: rabbitmq/rabbitmq-server#16347

The issue is a review of what remains to be done for per-protocol connection limits. The stream plugin already has stream.max_connections and the web_mqtt plugin already has web_mqtt.max_connections. This document covers the implementation of mqtt.max_connections (PR #16367, under revision) and stomp.max_connections (PR #16368, open).

Status of PR #16367: The initial implementation used ranch:info(RanchRef) (same as the stream plugin). Reviewer @ansd identified that this gives a per-listener count, not a node-wide count. MQTT supports port-to-vhost mapping (multiple listeners on different ports), dual-stack (separate IPv4/IPv6 listeners), and mixed TCP/TLS deployments — each of which is a separate Ranch ref with its own supervisor. With four listeners and max_connections = 1000, the actual node limit would be 4000. The fix is to use the MQTT P

lukebakken

Review: cloudamqp/rabbitmq-delayed-message-exchange#2 - Migrate from Mnesia to Leveled

Scope: PR head 3878a85 (24 commits, +1377 / -259). Focus: correctness and design.

TL;DR

The layering is defensible and follows the RabbitMQ precedent for Mnesia-to-Khepri backends (recent-history, JMS, consistent-hash exchanges). Single-bucket timestamp-prefixed keys are a reasonable choice. But the Leveled backend has two critical correctness bugs: storage is never actually freed after delivery, and messages_delayed/1 is wrong for any exchange that has ever delivered a message. There are also several design and robustness issues around the gen_server / migration handoff and a macOS-hostile Makefile. The migration path has a documented "at-most-one extra delivery" tradeoff that is defensible but not exercised by the tests. The PR should not merge as-is; the two critical bugs are blockers. A follow-up topic branch has already landed fixes for several other items in this review; see the section below.

A

lukebakken

Photos:

https://photos.app.goo.gl/HsBccMnvRbCVmdN58

Resources I've read:

• https://producthelp.maytag.com/Laundry/Washers/Top_Load_Washer/Cleaning_Performance/White_Residue_on_Clothing
• https://www.reddit.com/r/laundry/comments/1qxqzgp/maytag_is_washing_machine_leaving_whitegrey_gunk/
• https://www.reddit.com/r/laundry/comments/1hv0bix/maytag_washer_leaves_residue/
• https://www.reddit.com/r/laundry/comments/1qfm216/need_help_with_maytag_washing_machine_that_doesnt/

lukebakken

Update-AUPackages

UTC: 2026-05-13 08:14 chocolatey-beam/au-packages

This file is automatically generated by the update_all.ps1 script using the Chocolatey-AU module.

Ignored | History | Force Test | Releases

lukebakken

Update-AUPackages

UTC: 2026-05-15 06:41 rabbitmq/chocolatey-package

This file is automatically generated by the update_all.ps1 script using the Chocolatey-AU module.

lukebakken

Migration to chocolatey-community Organization

Overview

This document outlines the steps required if the chocolatey-community organization chooses to accept this template and its associated wiki as the official AU packages template.

Current State

Repositories:

• Template: chocolatey-beam/au-packages-template

lukebakken

PowerShell 7 Empty String Argument Passing Test

This test demonstrates the PowerShell 7.3.0+ breaking change in empty string argument passing and verifies that the fix using $null instead of '' works correctly.

The Bug

PowerShell 7.3.0+ changed how empty strings are passed to external commands:

PowerShell 5.1: Empty strings are filtered out

lukebakken

RabbitMQ 4.0.5 Consumer Count Discrepancy Analysis

Summary

When rabbitmqctl list_consumers -q | wc -l reports a significantly lower number of consumers than the Management UI → Global counts → Consumers, the mismatch is usually due to one or more of the following factors.

---

1. CLI Limits to a Single VHost

lukebakken

https://www.cilogear.com/dyneema60.html

Size: Large Purchased April 28th, 2021

This pack is $849 new, selling for $450 plus shipping. Used on a trip up Mt Rainier and Glacier Peak in WA state. It’s a great pack but is more than what I need.

Size is Large. I am 5′ 10″ tall (70 inches / 177cm), 32″ waist, and average build. The pack fits perfectly.

Contact via email or text message

lukebakken

[
    {rabbit, [
        {tcp_listeners, [{"127.0.0.1", 1672}]},
        {ssl_listeners, [1671]}, % This needs to be unique on each node
        {log_levels, [{connection, debug}]},
        {heartbeat, 30},
        {handshake_timeout, 20000},
        {consumer_timeout, 86400000},
        {ssl_handshake_timeout, 20000},
        {default_vhost, <<"default">>},