### Example LavinMQ Configuration File

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/configuration.md

A complete example of a LavinMQ configuration file, demonstrating global settings and protocol-specific configurations for AMQP, MQTT, and management interfaces.

```ini
[main]
data_dir = /var/lib/lavinmq
log_level = info
tls_cert = /etc/lavinmq/cert.pem
tls_key = /etc/lavinmq/key.pem

[amqp]
bind = ::
port = 5672
tls_port = 5671

[mqtt]
bind = ::
port = 1883
tls_port = 8883

[mgmt]
bind = ::
port = 15672
tls_port = 15671

[clustering]
enabled = false
```

--------------------------------

### Install LavinMQ on Fedora

Source: https://github.com/cloudamqp/lavinmq/blob/main/README.md

Installs LavinMQ by creating a repository file and using dnf. This method is suitable for Fedora systems.

```sh
sudo tee /etc/yum.repos.d/lavinmq.repo << 'EOF'
[lavinmq]
name=LavinMQ
baseurl=https://packagecloud.io/cloudamqp/lavinmq/fedora/$releasever/$basearch
gpgkey=https://packagecloud.cloudamqp.com/lavinmq/gpgkey
repo_gpgcheck=1
gpgcheck=0
EOF
sudo dnf install lavinmq
```

--------------------------------

### Install LavinMQ on Debian/Ubuntu

Source: https://github.com/cloudamqp/lavinmq/blob/main/README.md

Installs LavinMQ using curl and apt-get. Ensure you have the necessary permissions to add GPG keys and sources.

```sh
curl -fsSL https://packagecloud.io/cloudamqp/lavinmq/gpgkey | gpg --dearmor | sudo tee /usr/share/keyrings/lavinmq.gpg > /dev/null
. /etc/os-release
echo "deb [signed-by=/usr/share/keyrings/lavinmq.gpg] https://packagecloud.io/cloudamqp/lavinmq/$ID $VERSION_CODENAME main" | sudo tee /etc/apt/sources.list.d/lavinmq.list
sudo apt-get update
sudo apt-get install lavinmq
```

--------------------------------

### Troubleshoot LavinMQ Startup Errors

Source: https://github.com/cloudamqp/lavinmq/blob/main/TROUBLESHOOTING.md

Check recent logs, file permissions, and disk space when LavinMQ fails to start.

```sh
journalctl --unit lavinmq --since "5 minutes ago"
ls -ld /var/lib/lavinmq
sudo chown -R lavinmq:lavinmq /var/lib/lavinmq
df -h /var/lib/lavinmq
```

--------------------------------

### Token Scopes Example

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/authentication.md

This example shows how to define scopes for an authentication token. These scopes grant specific permissions like management tags, read/write access to vhosts, and configuration access to resources.

```text
tag:management
read:%2F/.*
write:%2F/orders
configure:staging/temp.*
```

--------------------------------

### Run LavinMQ Server

Source: https://github.com/cloudamqp/lavinmq/blob/main/README.md

Starts the LavinMQ server with a specified data directory. Use -h for more configuration options.

```sh
lavinmq -D /var/lib/lavinmq
```

--------------------------------

### Install Local Review Tool

Source: https://github.com/cloudamqp/lavinmq/blob/main/CONTRIBUTING.md

Install the `local-review` tool to enable AI-assisted code reviews locally. This tool can also be used as a CLI for specific review tasks.

```shell
local-review install
```

--------------------------------

### Build LavinMQ from Source

Source: https://github.com/cloudamqp/lavinmq/blob/main/README.md

Clones the LavinMQ repository, builds the project using make, and optionally installs it.

```sh
git clone git@github.com:cloudamqp/lavinmq.git
cd lavinmq
make
sudo make install # optional
```

--------------------------------

### Start LavinMQ with Clustering Enabled

Source: https://github.com/cloudamqp/lavinmq/blob/main/README.md

Alternatively, start the LavinMQ service with clustering enabled via command-line arguments. This includes specifying the data directory, enabling clustering, and setting the bind and advertised URIs.

```sh
lavinmq --data-dir /var/lib/lavinmq --clustering --clustering-bind :: --clustering-advertised-uri=tcp://my-ip:5679
```

--------------------------------

### Build API Documentation

Source: https://github.com/cloudamqp/lavinmq/blob/main/CONTRIBUTING.md

Generate API documentation for the project. This command requires Node.js and npm to be installed, as it uses `npx` to run documentation generation tools.

```shell
make docs
```

--------------------------------

### Start LavinMQ Broker

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/lavinmqctl.md

Starts the AMQP broker process if it is stopped.

```bash
start_app
```

--------------------------------

### Install LavinMQ on macOS with Homebrew

Source: https://github.com/cloudamqp/lavinmq/blob/main/README.md

Installs LavinMQ using the Homebrew package manager on macOS.

```sh
brew install lavinmq
```

--------------------------------

### Run LavinMQ with Custom Path

Source: https://github.com/cloudamqp/lavinmq/blob/main/CONTRIBUTING.md

Start the LavinMQ application with a specified directory for AMQP data. This is part of the frontend development workflow, allowing the server to run separately.

```shell
./bin/lavinmq -D /tmp/amqp
```

--------------------------------

### Create a Shovel

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/lavinmqctl.md

Configures and starts a new shovel for message transfer between sources and destinations, with numerous options for URIs, queues, exchanges, and acknowledgments.

```bash
add_shovel <name> --src-uri --dest-uri --src-queue --src-exchange --src-exchange-key --dest-exchange --dest-exchange-key --dest-queue --src-prefetch-count --ack-mode --src-delete-after --reconnect-delay
```

--------------------------------

### Check LavinMQ Version

Source: https://github.com/cloudamqp/lavinmq/blob/main/TROUBLESHOOTING.md

Display the installed LavinMQ version.

```sh
lavinmq --version
```

--------------------------------

### Pull JavaScript Dependencies

Source: https://github.com/cloudamqp/lavinmq/blob/main/CONTRIBUTING.md

Fetch and install necessary JavaScript dependencies for the frontend. This command should be run when setting up the development environment or after pulling changes that affect frontend assets.

```shell
make js
```

--------------------------------

### Per-Hostname TLS Configuration Example

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/configuration.md

This snippet shows how to configure TLS settings for a specific hostname. It includes certificate, key, minimum TLS version, peer verification, and CA certificate paths.

```ini
[sni:example.com]
tls_cert = /path/to/example.com.crt
tls_key = /path/to/example.com.key
tls_min_version = 1.3
tls_verify_peer = true
tls_ca_cert = /path/to/ca.pem
```

--------------------------------

### SystemD Service Unit Configuration

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/systemd.md

Example SystemD service unit file for LavinMQ. This configures LavinMQ to run as a service, with automatic restart on failure and integration with SystemD's notification system.

```ini
[Unit]
Description=LavinMQ
After=network.target

[Service]
Type=notify
ExecStart=/usr/bin/lavinmq --config /etc/lavinmq/lavinmq.ini
Restart=on-failure
User=lavinmq
Group=lavinmq

[Install]
WantedBy=multi-user.target
```

--------------------------------

### SystemD Socket Unit Configuration

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/systemd.md

Example SystemD socket unit file for AMQP. This configuration allows SystemD to listen on port 5672 and pass the socket to LavinMQ.

```ini
[Socket]
ListenStream=5672

[Install]
WantedBy=sockets.target
```

--------------------------------

### LavinMQ Definitions JSON Structure

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/definitions.md

This is an example of the expected JSON structure for LavinMQ definitions, including version, vhosts, users, permissions, exchanges, queues, bindings, policies, and parameters.

```json
{
  "lavinmq_version": "2.x.x",
  "vhosts": [
    { "name": "/" }
  ],
  "users": [
    {
      "name": "guest",
      "password_hash": "...",
      "hashing_algorithm": "SHA256",
      "tags": "administrator"
    }
  ],
  "permissions": [
    {
      "user": "guest",
      "vhost": "/",
      "configure": ".*",
      "read": ".*",
      "write": ".*"
    }
  ],
  "exchanges": [...],
  "queues": [...],
  "bindings": [...],
  "policies": [...],
  "parameters": [...] 
}
```

--------------------------------

### AMQP throughput scenario with queue pattern range

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/lavinmqperf.md

This command runs the AMQP throughput scenario using a pattern for queue names, starting from index 10 and ending at index 20.

```bash
lavinmqperf amqp throughput --queue-pattern=queue-% --queue-pattern-from=10 --queue-pattern-to=20
```

--------------------------------

### Print Build Information

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/lavinmqctl.md

Displays detailed build information for lavinmqctl and exits.

```bash
--build-info
```

--------------------------------

### Create a New Vhost

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/lavinmqctl.md

Adds a new virtual host to the LavinMQ server.

```bash
add_vhost <vhost>
```

--------------------------------

### Create a Queue

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/lavinmqctl.md

Creates a new queue with various optional configurations like durability, TTL, and dead-lettering.

```bash
create_queue <name> --durable --auto-delete --expires --max-length --message-ttl --delivery-limit --reject-on-overflow --dead-letter-exchange --dead-letter-routing-key --stream-queue
```

--------------------------------

### Consume from a Specific Timestamp in a Stream

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/streams.md

Use 'basic.consume' with 'x-stream-offset' set to a timestamp to start reading messages published after that specific time.

```json
{
  "x-stream-offset": 1678886400000
}
```

--------------------------------

### Run lavinmqperf with MQTT throughput scenario

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/lavinmqperf.md

This command runs the MQTT throughput scenario with QoS level 1, a test duration of 30 seconds, and specifies the MQTT broker URI.

```bash
lavinmqperf mqtt throughput --qos=1 --time=30 --uri=mqtt://localhost:1883
```

--------------------------------

### Consume from the First Message in a Stream

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/streams.md

Use 'basic.consume' with 'x-stream-offset: first' to start reading from the beginning of a stream. This is useful for replaying all messages.

```json
{
  "x-stream-offset": "first"
}
```

--------------------------------

### Import Definitions via CLI

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/definitions.md

Use the lavinmqctl command-line tool to import definitions from a specified JSON file.

```shell
lavinmqctl import_definitions definitions.json
```

--------------------------------

### Consume from a Specific Offset Number in a Stream

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/streams.md

Use 'basic.consume' with 'x-stream-offset' set to an integer to start reading from a specific message offset number.

```json
{
  "x-stream-offset": 12345
}
```

--------------------------------

### Configure Automatic Definition Loading on Startup

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/definitions.md

Set the 'load_definitions' option in the '[main]' section of the LavinMQ configuration file to automatically import a JSON definitions file on broker startup.

```ini
[main]
load_definitions = /etc/lavinmq/definitions.json
```

--------------------------------

### Configure Authentication Backends

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/authentication.md

Defines an ordered list of authentication backends to be tried sequentially. If empty, only local authentication is used.

```ini
[main]
auth_backends = local,oauth
```

--------------------------------

### Consume from the Last Available Chunk in a Stream

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/streams.md

Use 'basic.consume' with 'x-stream-offset: last' to start reading from the most recent messages in a stream. This is useful for near real-time consumption.

```json
{
  "x-stream-offset": "last"
}
```

--------------------------------

### Run lavinmqperf with AMQP connection-churn scenario

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/lavinmqperf.md

This command runs the AMQP connection-churn scenario to measure connection open/close throughput. It uses Benchmark.ips and only global options apply.

```bash
lavinmqperf amqp connection-churn
```

--------------------------------

### Print Version Information

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/lavinmqctl.md

Displays the version of lavinmqctl and exits.

```bash
-v, --version
```

--------------------------------

### Run lavinmqperf with AMQP bind-churn scenario

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/lavinmqperf.md

This command runs the AMQP bind-churn scenario to measure queue.bind throughput against amq.direct. It uses Benchmark.ips and only global options apply.

```bash
lavinmqperf amqp bind-churn
```

--------------------------------

### Add a New User

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/lavinmqctl.md

Creates a new user with the specified username and password.

```bash
add_user <username> <password>
```

--------------------------------

### Get Detailed LavinMQ Memory Status (Linux)

Source: https://github.com/cloudamqp/lavinmq/blob/main/TROUBLESHOOTING.md

Provides more detailed memory information for the LavinMQ process on Linux systems by inspecting the process's status file.

```bash
cat /proc/$(pidof lavinmq)/status | grep -i vm
```

--------------------------------

### Run lavinmqperf with AMQP queue-churn scenario

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/lavinmqperf.md

This command runs the AMQP queue-churn scenario to measure transient and durable queue create/delete throughput. It uses Benchmark.ips and only global options apply.

```bash
lavinmqperf amqp queue-churn
```

--------------------------------

### Export All Definitions

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/lavinmqctl.md

Exports the entire server configuration, including users, vhosts, queues, and policies, as a JSON file.

```bash
export_definitions
```

--------------------------------

### List All Policies

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/lavinmqctl.md

Retrieves a list of all defined policies on the LavinMQ server.

```bash
list_policies
```

--------------------------------

### Get Detailed LavinMQ Memory Status (macOS)

Source: https://github.com/cloudamqp/lavinmq/blob/main/TROUBLESHOOTING.md

Retrieves detailed memory usage information for the LavinMQ process on macOS, including Resident Set Size (RSS) and Virtual Size (VSZ).

```bash
ps -o pid,rss,vsz -p $(pgrep lavinmq)
```

--------------------------------

### Show Help Message

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/lavinmqctl.md

Displays the help message and exits the command.

```bash
-h, --help
```

--------------------------------

### Run lavinmqperf with AMQP connection-count scenario (channels and consumers)

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/lavinmqperf.md

This command runs the AMQP connection-count scenario, opening 100 connections, each with 4 channels, and each channel with 2 consumers.

```bash
lavinmqperf amqp connection-count -x=100 -c=4 -C=2 -u my-queue
```

--------------------------------

### Run lavinmqperf with AMQP connection-count scenario

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/lavinmqperf.md

This command runs the AMQP connection-count scenario, opening 100 connections.

```bash
lavinmqperf amqp connection-count -x=100
```

--------------------------------

### Build Project with Shards

Source: https://github.com/cloudamqp/lavinmq/blob/main/CONTRIBUTING.md

Compile the LavinMQ project using the Shards package manager. This is the standard way to build the release version of the application.

```shell
shards build
```

--------------------------------

### Compile and Run Locally

Source: https://github.com/cloudamqp/lavinmq/blob/main/CONTRIBUTING.md

Compile and immediately run the LavinMQ application locally with specific compile-time flags. Use this for testing new features or configurations.

```crystal
crystal run src/lavinmq.cr -Dpreview_mt -Dexecution_context
```

--------------------------------

### Export All Definitions via CLI

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/definitions.md

Utilize the lavinmqctl command-line tool to export all LavinMQ server definitions.

```shell
lavinmqctl export_definitions
```

--------------------------------

### Import Definitions from JSON

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/lavinmqctl.md

Imports server definitions from a specified JSON file, applying configurations like users, vhosts, and policies.

```bash
import_definitions <file>
```

--------------------------------

### Create a Federation Upstream

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/lavinmqctl.md

Configures a new federation upstream for replicating queues or exchanges, with options for URI, TTL, and prefetch count.

```bash
add_federation <name> --uri --expires --message-ttl --max-hops --prefetch-count --reconnect-delay --ack-mode --queue --exchange
```

--------------------------------

### List All Shovels

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/lavinmqctl.md

Retrieves a list of all configured shovel configurations.

```bash
list_shovels
```

--------------------------------

### Global TLS Configuration

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/tls.md

Configure the certificate and private key files for global TLS settings. These settings apply to all TLS listeners unless overridden by SNI sections.

```ini
[main]
tls_cert = /etc/lavinmq/cert.pem
tls_key = /etc/lavinmq/key.pem
```

--------------------------------

### Run Specs

Source: https://github.com/cloudamqp/lavinmq/blob/main/CONTRIBUTING.md

Execute all project specifications to ensure code quality and identify regressions. This is a fundamental step before making any code changes.

```shell
make test
```

--------------------------------

### AMQP throughput scenario with custom queue and routing key

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/lavinmqperf.md

This command runs the AMQP throughput scenario using a custom queue name 'my-perf-test' and a specific routing key 'test-key'.

```bash
lavinmqperf amqp throughput -u my-perf-test -k test-key
```

--------------------------------

### Create an Exchange

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/lavinmqctl.md

Creates a new exchange with specified type and name, supporting various options like durability and alternate exchanges.

```bash
create_exchange <type> <name> --auto-delete --durable --internal --delayed --alternate-exchange --persist-messages --persist-ms
```

--------------------------------

### List All Connections

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/lavinmqctl.md

Retrieves a list of all active AMQP connections to the server.

```bash
list_connections
```

--------------------------------

### Build Local Binary

Source: https://github.com/cloudamqp/lavinmq/blob/main/CONTRIBUTING.md

Compile the LavinMQ binary locally without release optimizations. This is useful for development and debugging purposes.

```shell
make bin/lavinmq CRYSTAL_FLAGS=
```

--------------------------------

### List All Vhosts

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/lavinmqctl.md

Retrieves a list of all virtual hosts configured on the server.

```bash
list_vhosts
```

--------------------------------

### Follow LavinMQ Logs in Real-time (Kubernetes)

Source: https://github.com/cloudamqp/lavinmq/blob/main/TROUBLESHOOTING.md

Stream LavinMQ logs in real-time from a Kubernetes pod.

```sh
kubectl logs --follow <pod_name>
```

--------------------------------

### Check LavinMQ File Descriptor Limit and Usage (Linux)

Source: https://github.com/cloudamqp/lavinmq/blob/main/TROUBLESHOOTING.md

Inspects the file descriptor limits and current usage for the LavinMQ process on Linux. High churn can lead to FD exhaustion.

```bash
cat /proc/$(pidof lavinmq)/limits | grep "open files"
sudo ls -l /proc/$(pidof lavinmq)/fd | wc -l
```

--------------------------------

### Run lavinmqperf with AMQP connection-count scenario (localhost)

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/lavinmqperf.md

This command runs the AMQP connection-count scenario, connecting to random localhost addresses to distribute source ports.

```bash
lavinmqperf amqp connection-count -l
```

--------------------------------

### AMQP throughput scenario with consumer prefetch

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/lavinmqperf.md

This command runs the AMQP throughput scenario, setting the consumer prefetch count to 50.

```bash
lavinmqperf amqp throughput -P=50
```

--------------------------------

### AMQP throughput scenario with queue pattern

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/lavinmqperf.md

This command runs the AMQP throughput scenario using a pattern for queue names, e.g., 'queue-1', 'queue-2', etc.

```bash
lavinmqperf amqp throughput --queue-pattern=queue-%
```

--------------------------------

### List All Queues

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/lavinmqctl.md

Retrieves a list of all queues across all vhosts.

```bash
list_queues
```

--------------------------------

### Check System Resources

Source: https://github.com/cloudamqp/lavinmq/blob/main/TROUBLESHOOTING.md

Monitor disk space and memory usage for LavinMQ and the system.

```sh
df -h /var/lib/lavinmq
free -h
```

--------------------------------

### Follow LavinMQ Logs in Real-time (Docker)

Source: https://github.com/cloudamqp/lavinmq/blob/main/TROUBLESHOOTING.md

Stream LavinMQ logs in real-time from a Docker container.

```sh
docker logs --follow <container_name>
```

--------------------------------

### MQTT Configuration

Source: https://github.com/cloudamqp/lavinmq/blob/main/README.md

This snippet shows the configuration parameters for enabling and customizing MQTT support in LavinMQ. It specifies the bind address, ports for plain and TLS connections, and maximum inflight messages.

```ini
[MQTT]
bind = "127.0.0.1"
port = 1883
tls_port = 8883
unix_path = ""
max_inflight_messages = 65535
default_vhost = "/"

```

--------------------------------

### Run lavinmqperf with AMQP throughput scenario

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/lavinmqperf.md

This command runs the AMQP throughput scenario with 4 publishers, 4 consumers, a message size of 1024 bytes, and a test duration of 60 seconds.

```bash
lavinmqperf amqp throughput --publishers=4 --consumers=4 --size=1024 --time=60
```

--------------------------------

### View LavinMQ Connection States (Linux)

Source: https://github.com/cloudamqp/lavinmq/blob/main/TROUBLESHOOTING.md

Display detailed TCP connection states for the LavinMQ process on Linux.

```sh
sudo ss -antp | grep $(pidof lavinmq)
```

--------------------------------

### AMQP throughput scenario with consumer arguments

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/lavinmqperf.md

This command runs the AMQP throughput scenario, providing consumer arguments as a JSON object.

```bash
lavinmqperf amqp throughput --consumer-args='{"x-priority": 10}'
```

--------------------------------

### Import Definitions via API

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/definitions.md

Import LavinMQ definitions by sending a JSON payload to this API endpoint. Ensure the Content-Type header is set correctly.

```shell
POST /api/definitions
Content-Type: application/json
<json body>
```

--------------------------------

### Data Directory Layout

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/storage.md

Illustrates the hierarchical structure of LavinMQ's data directory, including user, vhost, and queue-specific subdirectories and their contents.

```text
<data_dir>/
  .lock                      # Data directory lock file
  users.json                 # User definitions
  vhosts.json                # Vhost list
  <vhost_sha1>/              # Per-vhost directory (SHA1 of vhost name)
    definitions.amqp         # Exchange, queue, binding, policy definitions
    <queue_sha1>/            # Per-queue directory (SHA1 of queue name)
      msgs.0000000000        # Message segment files
      acks.0000000000        # Ack tracking files
      meta.0000000000        # Metadata files (used by some queue types)

```

--------------------------------

### List All Exchanges

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/lavinmqctl.md

Retrieves a list of all exchanges configured on the server.

```bash
list_exchanges
```

--------------------------------

### AMQP throughput scenario with JSON output

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/lavinmqperf.md

This command runs the AMQP throughput scenario and prints the final summary in JSON format.

```bash
lavinmqperf amqp throughput -j
```

--------------------------------

### Set Vhost Limits

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/lavinmqctl.md

Configures limits for a virtual host, such as maximum connections and queues. Input must be a JSON string.

```bash
set_vhost_limits <json>
```

--------------------------------

### AMQP throughput scenario with publish confirmations

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/lavinmqperf.md

This command runs the AMQP throughput scenario with publish confirmations enabled, allowing up to 100 unconfirmed publishes in flight.

```bash
lavinmqperf amqp throughput -c=100
```

--------------------------------

### Set Vhost Permissions

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/lavinmqctl.md

Defines the permissions (configure, write, read) for a user on a specific virtual host.

```bash
set_permissions <user> <configure> <write> <read>
```

--------------------------------

### Watch and Recompile Views

Source: https://github.com/cloudamqp/lavinmq/blob/main/CONTRIBUTING.md

Continuously monitor view files for changes and automatically recompile them. This speeds up frontend development by providing instant feedback.

```shell
make watch-views
```

--------------------------------

### Record LavinMQ Performance Data (Linux)

Source: https://github.com/cloudamqp/lavinmq/blob/main/TROUBLESHOOTING.md

Record performance data, including call graphs, for the LavinMQ process for later analysis using `perf record`.

```sh
# Record performance data for 30-60 seconds
sudo perf record --call-graph lbr --pid $(pidof lavinmq)

# View the recording
perf report
```

--------------------------------

### Connect to a Custom LavinMQ Instance

Source: https://github.com/cloudamqp/lavinmq/blob/main/docs/lavinmqctl.md

Specify a custom management API URI to connect lavinmqctl to a different LavinMQ server instance.

```bash
lavinmqctl --uri http://host:port ...
```