Missing Time on Ruby on Rails App Template

Authentication & Access
1

Hi everyone,

I want to optimize my app load time. Whenever I open my app for the first time, it lost around 1.5-2 seconds. After first load, there is no lost time…

I’m using the latest version of the “shopify_app” gem and I use the new authentication strategy… Tried almost everything. What can be the real problem? Is there anyone facing similar issue?

2

Sorry could you clarify what you mean by lost time?
Do you have the network waterfall from your app load?

Are you using managed install or legacy install?

3

Hi @JordanFinners

I just wanted to edit my reply because it’s still happening…

Here is my logs;

2025-08-17T21:39:49.407944+00:00 app[web.1]: I, [2025-08-17T21:39:49.407887 #2]  INFO -- : [cd97bbf5-7b4d-809b-24d4-969582eb07f0] Started GET "/?embedded=1&hmac=HMAC_HERE&host=HOST_HERE&id_token=[FILTERED]&link_source=search&locale=en&session=SESSION&shop=*****.myshopify.com&timestamp=1755466788" for 172.69.9.77 at 2025-08-17 21:39:49 +0000
2025-08-17T21:39:49.408791+00:00 app[web.1]: I, [2025-08-17T21:39:49.408759 #2]  INFO -- : [cd97bbf5-7b4d-809b-24d4-969582eb07f0] Processing by HomeController#index as HTML
2025-08-17T21:39:49.408832+00:00 app[web.1]: I, [2025-08-17T21:39:49.408814 #2]  INFO -- : [cd97bbf5-7b4d-809b-24d4-969582eb07f0]   Parameters: {"embedded"=>"1", "hmac"=>"HMAC_HERE", "host"=>"HOST_HERE", "id_token"=>"[FILTERED]", "link_source"=>"search", "locale"=>"en", "session"=>"SESSION_HERE", "shop"=>"*****.myshopify.com", "timestamp"=>"1755466788"}
2025-08-17T21:39:49.409095+00:00 app[web.1]: I, [2025-08-17T21:39:49.409072 #2]  INFO -- : [cd97bbf5-7b4d-809b-24d4-969582eb07f0] 🔍 STEP 1: params[:shop] = *****.myshopify.com
2025-08-17T21:39:49.410138+00:00 app[web.1]: I, [2025-08-17T21:39:49.410106 #2]  INFO -- : [cd97bbf5-7b4d-809b-24d4-969582eb07f0] 🔍 STEP 2: About to find shop
2025-08-17T21:39:50.773191+00:00 app[web.1]: Shop Load (68.9ms)  SELECT "shops".* FROM "shops" WHERE "shops"."shopify_domain" = $1 LIMIT $2  [["shopify_domain", "*****.myshopify.com"], ["LIMIT", 1]]
2025-08-17T21:39:50.773485+00:00 app[web.1]: ↳ app/controllers/application_controller.rb:30:in `set_shop_origin'
2025-08-17T21:39:50.774712+00:00 app[web.1]: I, [2025-08-17T21:39:50.774663 #2]  INFO -- : [cd97bbf5-7b4d-809b-24d4-969582eb07f0] 🔍 STEP 3: Shop found: #.....

I’m using the managed install…
I can’t see anything unusual on network waterfall.

It just waits around 1.5-2 seconds nowhere… I can’t detect why it’s waiting or what it is doing…

Not: This won’t happen on the development environment, only on the production…

4

Where is your database located in relation to where your app is located?
I suspect it is connecting/latecy to your database.