[charts] Add index to speed things up

PROJECT.org

@@ -88,7 +88,7 @@ fetching and simple saving.
 *** Metadata sources
 **** Scraper
 
-* Backlog [0/14] :vrobbler:project:personal:
+* Backlog [1/16] :vrobbler:project:personal:
 ** TODO [#C] Create small utility to clean up tracks scrobbled with wonky playback times :vrobbler:personal:bug:music:scrobbles:
 :PROPERTIES:
 :ID:       702462cf-d54b-48c6-8a7c-78b8de751deb
@@ -518,6 +518,31 @@ favorited media objects.
 :PROPERTIES:
 :ID:       79f867c3-1288-4143-b6bf-2a452983ee9f
 :END:
+** TODO [#C] Implement loguru into project :feature:loguru:logging:
+:PROPERTIES:
+:ID:       efcd0c0a-db81-4518-9c23-5505d59e8ef5
+:END:
+
+*** Description
+
+Would be great to formalize how we log so we can search for errors and such more
+easily. And our exposure to PII is really low at this point in the project,
+so we can probably use backtrace=True and diagnose=True to help us root cause
+bugs faster.
+
+** DONE [#A] Improve speed of index and chart pages :bug:scrobbles:perf:
+:PROPERTIES:
+:ID:       031a23f8-7c02-4926-9884-6654ceca16c2
+:END:
+
+*** Description
+
+Over the last few releases, the home page and charts pages have gotten really
+slow.
+
+We should look into what's causing the slowness and maybe do more agressive
+query optimization or caching.
+
 * Version 51.2 [2/2]
 ** DONE [#A] Fix bug where last page of book gets separate scrobble :bug:books:importers:koreader:
 :PROPERTIES: