From d0f3875d296f391a9d4605cde6d3646b31e5a616 Mon Sep 17 00:00:00 2001
From: Chris Hill-Scott <me@quis.cc>
Date: Thu, 19 Mar 2020 12:30:29 +0000
Subject: [PATCH] Slow down the update interval on the dashboard
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Dashboard is the most intensive page we AJAX, and also the highest
traffic one. We’ve already slowed it from 2 to 5 seconds, this slows it
further to 20 seconds to reduce the load.

This leaves other pages (for example looking at a single job) at the
platform-level default of 5 seconds, because we think they cause less
load and the real-timelyness isn’t critical to people’s business
processes.

For looking at a single notification we know from research that someone
sending these one-at-a-time often waits to see if they’re delivered,
so let’s bring this back down to the previous value of 2 seconds.
---
 app/templates/views/dashboard/dashboard.html        | 10 +++++-----
 app/templates/views/notifications/notification.html |  4 ++--
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/app/templates/views/dashboard/dashboard.html b/app/templates/views/dashboard/dashboard.html
index fa8405690..e7332e9f5 100644
--- a/app/templates/views/dashboard/dashboard.html
+++ b/app/templates/views/dashboard/dashboard.html
@@ -19,25 +19,25 @@
       {% include 'views/dashboard/write-first-messages.html' %}
     {% endif %}
 
-    {{ ajax_block(partials, updates_url, 'upcoming') }}
+    {{ ajax_block(partials, updates_url, 'upcoming', interval=20) }}
 
     <h2 class="heading-medium">
       In the last 7 days
     </h2>
 
-    {{ ajax_block(partials, updates_url, 'inbox') }}
+    {{ ajax_block(partials, updates_url, 'inbox', interval=20) }}
 
-    {{ ajax_block(partials, updates_url, 'totals') }}
+    {{ ajax_block(partials, updates_url, 'totals', interval=20) }}
     {{ show_more(
       url_for('.monthly', service_id=current_service.id),
       'See messages sent per month'
     ) }}
 
-    {{ ajax_block(partials, updates_url, 'template-statistics') }}
+    {{ ajax_block(partials, updates_url, 'template-statistics', interval=20) }}
 
     {% if current_user.has_permissions('manage_service') %}
       <h2 class='heading-medium'>This year</h2>
-      {{ ajax_block(partials, updates_url, 'usage') }}
+      {{ ajax_block(partials, updates_url, 'usage', interval=20) }}
       {{ show_more(
         url_for(".usage", service_id=current_service['id']),
         'See usage'
diff --git a/app/templates/views/notifications/notification.html b/app/templates/views/notifications/notification.html
index 288cb7ee4..63bf4ceed 100644
--- a/app/templates/views/notifications/notification.html
+++ b/app/templates/views/notifications/notification.html
@@ -96,10 +96,10 @@
       </div>
     {% elif template.template_type == 'email' %}
       <div class="js-stick-at-bottom-when-scrolling">
-        {{ ajax_block(partials, updates_url, 'status', finished=finished) }}
+        {{ ajax_block(partials, updates_url, 'status', interval=2, finished=finished) }}
       </div>
     {% elif template.template_type == 'sms' %}
-      {{ ajax_block(partials, updates_url, 'status', finished=finished) }}
+      {{ ajax_block(partials, updates_url, 'status', interval=2, finished=finished) }}
     {% endif %}
 
     {% if current_user.has_permissions('send_messages') and current_user.has_permissions('view_activity') and template.template_type == 'sms' and can_receive_inbound %}