SolidStackWeb

CI Gem Version Ruby codecov

A mountable Rails engine that provides a unified web dashboard for the full Solid Stack — Solid Queue, Solid Cache, and Solid Cable — in a single interface with no asset pipeline dependency and no JavaScript runtime requirement.

Installation

Add the gem to your application's Gemfile:

gem "solid_stack_web"

Run:

bundle install

Mount the engine in config/routes.rb:

mount SolidStackWeb::Engine, at: "/solid_stack"

The dashboard will be available at /solid_stack (or whatever path you choose).

Solid Queue

Features

  • Overview dashboard — live counts across all queue statuses; done (1h/24h), healthy/stale process counts, and optionally slow jobs (when slow_job_threshold is configured); 12-hour throughput sparkline with per-bar hover tooltips
  • Job browser — browse jobs by status (ready, scheduled, claimed, blocked) with filtering by job class, queue name, priority, and time period; Discard All bulk-discards every job matching the current filters in one request; CSV export downloads jobs respecting active filters
  • Bulk selection — checkbox-select individual jobs for discard; select-all support
  • Per-queue browser — click any queue name or size to drill into its ready jobs with per-row and bulk discard; pause/resume controls on the queue page
  • Queue depth sparklines — Queues index shows a 12-hour depth chart per queue; each bar is the ready-job count at an hourly snapshot with an instant hover tooltip
  • Job detail page — full arguments (pretty-printed JSON), queue, priority, enqueued time, Active Job ID, concurrency key, scheduled/blocked-until metadata, and a Discard button
  • Failed jobs — list with retry / discard / bulk retry / bulk discard; Failed job detail page — full error, backtrace, and an inline JSON argument editor; submit to update arguments and retry in one action
  • Scheduled job management — "Run Now" and offset buttons (+1h / +24h / +7d) per row update the scheduled time inline via Turbo Stream; "Run All Now (N)" back-dates all matching executions at once
  • Recurring task list — enumerates all SolidQueue::RecurringTask records with cron schedule, job class or command, queue, next-run and last-run times, and a static/dynamic badge; each row has a "Run Now" button
  • Performance statistics page — GET /stats aggregates finished jobs by class name with execution count, avg, p50, p95, min, and max duration; click any column header to sort; defaults to p95 descending
  • Job history view — paginated list of all finished jobs with class name, queue, duration, and finished-at time; filterable by queue (click a badge), class substring, and time period; CSV export respects active filters
  • Auto-refresh — dashboard, jobs, processes, and history views poll automatically; pauses when the tab is hidden or a checkbox is checked; intervals configurable via dashboard_refresh_interval and default_refresh_interval
  • Turbo Stream job discard — removes the row inline without a full page reload

Configuration

SolidStackWeb.configure do |config|
  # Slow job threshold in seconds (default: nil — stat hidden).
  # When set, the dashboard shows a "Slow (24h)" count of finished jobs
  # whose wall time exceeded this value. Links to the Stats page.
  config.slow_job_threshold = 30

  # Alert webhooks — fired on every GET /metrics poll when a threshold is met.
  # Delivery failures are silently swallowed; cooldown prevents alert storms.
  config.alert_webhook_url       = "https://hooks.example.com/my-alert"
  config.alert_failure_threshold = 10          # POST when failed jobs >= this
  config.alert_queue_thresholds  = {           # POST when a queue's ready depth >= value
    "critical" => 50,
    "default"  => 500
  }
  config.alert_webhook_cooldown  = 3600        # seconds between alerts (default: 3600)

  # Auto-refresh intervals in milliseconds.
  config.dashboard_refresh_interval = 5_000   # overview dashboard (default: 5000)
  config.default_refresh_interval   = 10_000  # jobs, processes, history (default: 10000)

  # Maximum results shown by the search feature (default: 25).
  config.search_results_limit = 25

  # Show the raw serialized value on the cache entry detail page (default: false).
  # Disable for stores that contain sensitive data.
  config.allow_value_preview = true
end

Job Filtering

The jobs list supports four independent filters, all driven by query params:

Param Description
q Substring match against the job class name (e.g. q=Report)
queue Exact queue name match; select appears only when multiple queues exist
priority Exact priority value match; select appears only when multiple priorities exist
period Enqueued-at window — 1h, 24h, 7d, or omit for all time

Filters are preserved when switching between status tabs (Ready / Scheduled / Running / Blocked) and when discarding a job. They can be combined freely.

Solid Cache

Features

  • Overview dashboard card — live entry count (linked to the entry browser), total byte size, and oldest-entry age (time_ago_in_words with exact timestamp on hover; hidden when cache is empty)
  • Cache timeline — two side-by-side 24-hour bar charts showing entries written per hour and bytes written per hour; each bar has a hover tooltip
  • Size distribution — byte-range histogram (< 1 KB → > 1 MB) with entry counts and proportional inline bars; hidden when cache is empty
  • Largest entries — top 10 entries by byte size, each linked to the detail page; hidden when cache is empty
  • Entry browser — GET /cache/entries lists all SolidCache::Entry records in a paginated, sortable table; columns: key, byte size, created-at; sortable by any column; key auto-submits search after 4 characters
  • Key search — filter entries by key substring; results update automatically after 4 characters
  • Entry detail page — GET /cache/entries/:id shows the full key, byte size, and created-at; optionally displays the raw serialized value (see allow_value_preview below)
  • Delete entry — per-row delete button or detail-page button removes a single cache entry
  • Flush All — header button deletes every cache entry with a confirmation prompt

Solid Cable

Channel monitoring coming in v0.6.0. Currently shows active message count and distinct channel count on the overview dashboard.

Metrics endpoint

GET /metrics (relative to your mount path) returns a JSON payload suitable for external monitoring tools, uptime checkers, or custom alerting:

{
  "queue": {
    "ready": 4,
    "scheduled": 1,
    "claimed": 2,
    "blocked": 0,
    "failed": 3,
    "done_1h": 45,
    "done_24h": 312,
    "processes_healthy": 2,
    "processes_stale": 0,
    "slow_jobs": 7
  },
  "cache": { "entries": 1024, "byte_size": 2097152, "oldest_entry": "2026-05-20T10:00:00Z" },
  "cable": { "messages": 50, "channels": 3 },
  "generated_at": "2026-05-26T10:00:00Z"
}

slow_jobs is only present when slow_job_threshold is configured. The endpoint is protected by the same authentication as the rest of the dashboard.

General configuration

Create an initializer at config/initializers/solid_stack_web.rb:

SolidStackWeb.configure do |config|
  # Number of items per paginated page (default: 25)
  config.page_size = 50

  # Authentication — block runs in controller context.
  # Return a truthy value to allow access; falsy falls back to HTTP Basic.
  config.authenticate do
    current_user&.admin?
  end
end

Authentication

The authenticate block is evaluated in the context of each request's controller instance, so any helper method available to controllers (e.g. current_user from Devise) works directly. If the block returns false or nil, the engine falls back to HTTP Basic authentication. If no authenticate block is configured, the dashboard is open.

Requirements

Contributing

  1. Fork the repository
  2. Create a feature branch (git checkout -b feat/my-feature)
  3. Run the test suite: bundle exec rake
  4. Open a pull request

Bug reports and feature requests are welcome on GitHub Issues.

License

The gem is available as open source under the terms of the MIT License.