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Index Route DB Optimizations #130

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zwolf opened this issue Feb 10, 2020 · 0 comments
Open

Index Route DB Optimizations #130

zwolf opened this issue Feb 10, 2020 · 0 comments

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@zwolf
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zwolf commented Feb 10, 2020

Too many queries for index pages. GET /projects is an n+toomany. It's apparently pulling the workflows just to add the ids to relationships, which has got to be optimizable.

I, [2020-02-10T20:24:15.153729 #1]  INFO -- : [8310191b3bcb3364575cb979bc87368f] Started GET "/projects" for 10.244.0.29 at 2020-02-10 20:24:15 +0000
I, [2020-02-10T20:24:15.154625 #1]  INFO -- : [8310191b3bcb3364575cb979bc87368f] Processing by ProjectsController#index as HTML
D, [2020-02-10T20:24:17.004782 #1] DEBUG -- : [8310191b3bcb3364575cb979bc87368f]   User Load (78.2ms)  SELECT "users".* FROM "users" WHERE "users"."id" = $1 AND "users"."login" = $2 ORDER BY "users"."id" ASC LIMIT $3  [["id", 1325837], ["login", "zwolf"], ["LIMIT", 1]]
D, [2020-02-10T20:24:17.290874 #1] DEBUG -- : [8310191b3bcb3364575cb979bc87368f]    (81.0ms)  SELECT COUNT(*) FROM "projects"
D, [2020-02-10T20:24:17.291446 #1] DEBUG -- : [8310191b3bcb3364575cb979bc87368f]   CACHE  (0.0ms)  SELECT COUNT(*) FROM "projects"
D, [2020-02-10T20:24:17.338568 #1] DEBUG -- : [8310191b3bcb3364575cb979bc87368f]   Project Exists? (46.5ms)  SELECT 1 AS one FROM "projects" LIMIT $1 OFFSET $2  [["LIMIT", 1], ["OFFSET", 0]]
D, [2020-02-10T20:24:17.379943 #1] DEBUG -- : [8310191b3bcb3364575cb979bc87368f]   Project Load (36.4ms)  SELECT "projects".* FROM "projects" ORDER BY "projects"."id" ASC LIMIT $1 OFFSET $2  [["LIMIT", 1], ["OFFSET", 0]]
D, [2020-02-10T20:24:17.422998 #1] DEBUG -- : [8310191b3bcb3364575cb979bc87368f]   Project Load (39.1ms)  SELECT "projects".* FROM "projects" LIMIT $1 OFFSET $2  [["LIMIT", 30], ["OFFSET", 0]]
D, [2020-02-10T20:24:17.510766 #1] DEBUG -- : [8310191b3bcb3364575cb979bc87368f]    (78.9ms)  SELECT "workflows"."id" FROM "workflows" WHERE "workflows"."project_id" = $1  [["project_id", 7]]
D, [2020-02-10T20:24:17.512939 #1] DEBUG -- : [8310191b3bcb3364575cb979bc87368f]    (1.6ms)  SELECT "workflows"."id" FROM "workflows" WHERE "workflows"."project_id" = $1  [["project_id", 8]]
D, [2020-02-10T20:24:17.514993 #1] DEBUG -- : [8310191b3bcb3364575cb979bc87368f]    (1.6ms)  SELECT "workflows"."id" FROM "workflows" WHERE "workflows"."project_id" = $1  [["project_id", 9]]
D, [2020-02-10T20:24:17.517105 #1] DEBUG -- : [8310191b3bcb3364575cb979bc87368f]    (1.7ms)  SELECT "workflows"."id" FROM "workflows" WHERE "workflows"."project_id" = $1  [["project_id", 1764]]
D, [2020-02-10T20:24:17.519110 #1] DEBUG -- : [8310191b3bcb3364575cb979bc87368f]    (1.6ms)  SELECT "workflows"."id" FROM "workflows" WHERE "workflows"."project_id" = $1  [["project_id", 1814]]
I, [2020-02-10T20:24:17.519727 #1]  INFO -- : [8310191b3bcb3364575cb979bc87368f] Completed 200 OK in 2365ms (Views: 14.0ms | ActiveRecord: 1026.2ms | Allocations: 19854)

That's a lot of queries.

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