3a8c5117da
The super admin landing page runs all its stat queries synchronously before rendering anything. On large installs the exact `COUNT(*)` on conversations and the 30-day chart group-by scan the whole table and exceed the request timeout, so the first page load fails and the console is unreachable.
35 lines
1.2 KiB
Ruby
35 lines
1.2 KiB
Ruby
class SuperAdmin::DashboardController < SuperAdmin::ApplicationController
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include ActionView::Helpers::NumberHelper
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def index
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respond_to do |format|
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format.html
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format.json { render json: dashboard_stats }
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end
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end
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private
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def dashboard_stats
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Rails.cache.fetch('super_admin:dashboard_stats', expires_in: 30.minutes) do
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{
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chartData: Conversation.unscoped.group_by_day(:created_at, range: 30.days.ago..2.seconds.ago).count.to_a,
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accountsCount: number_with_delimiter(Account.count),
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usersCount: number_with_delimiter(User.count),
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inboxesCount: number_with_delimiter(Inbox.count),
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conversationsCount: number_with_delimiter(conversations_count_estimate)
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}
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end
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end
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# Exact COUNT(*) scans the whole table; the planner estimate is instant
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# and close enough for dashboard display.
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def conversations_count_estimate
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estimate = ActiveRecord::Base.connection.select_value(
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"SELECT reltuples::bigint FROM pg_class WHERE relname = 'conversations'"
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).to_i
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# reltuples is -1 until the table is first vacuumed/analyzed
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estimate.negative? ? Conversation.count : estimate
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end
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end
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