hiling_go/notes

################## SHOULD I SPLIT FOLLOW INTO 2 TABLES ?? ################################

we can put following and follower as 1 table instead of 2 table 
(follower and following) but it's gonna be have multiple where clause when
querying instead, we can use less where clause query if we split it into two 
tables, but idk how big is the performance difference is, so for right now
i'm just put it on single table, if the query speed diff noticeable we can 
just remigrate it later

REF: - https://www.percona.com/blog/how-expensive-is-a-where-clause-in-mysql/
     - https://stackoverflow.com/questions/58829268/does-using-where-clause-with-a-select-statement-increase-or-decrease-performance


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######################### IMPLEMENT POLYMORPHIC RELATIONS ################################

ok idk how to implement polymorphic (without ORM ofc) because Rails have 
the thing the polymorphic thing but imma just create a table  with 1 column 
"type" just polymorphic relation table so when i query it imma use "where" 
clause. 
ex: select message where commented_id = ... and where comment_type = (stories, ratings, locations)

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####################### INDONESIA ADMINISTRATIVE DIVISION ################################

https://en.wikipedia.org/wiki/Provinces_of_Indonesia


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######################### CUSTOM GIN VALIDATION ERR MESSAGE ##############################

make custom err message, and get all the type, the err message sucks now
https://github.com/gin-gonic/gin/issues/430 (using middleware)
tbh i'd raher use like a wrapper instead of middleware but we'll see 


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