mariocarrion / videos

Slides and examples used for my training videos

Videos

Slides, source code and examples used for the training videos I recorded, join the fun at https://youtube.com/@MarioCarrion

Install

go install golang.org/x/tools/cmd/present

This will install the binary in your GOBIN then run it using:

present

videos's Issues

zsh and migrate command

migrate -path db/migrations/ -database postgres://user:password@localhost:5432/dbname?sslmode=disable up

above fails in wsl2 with zsh. after little googling it can be fixed by wrapping postgres connection string in double quotes

Following works:
migrate -path db/migrations/ -database "postgres://user:password@localhost:5432/dbname?sslmode=disable" up

dont know wrapping in double quotes works in mac too since I dont have access to a mac

readme missing running memcached docker

docker run
-d
-p 11211:11211
memcached:1.6.9-alpine

this should be included in readme if mem cached is still used. sqlc episode is providing hint about postgres docker container but misses memcached

Postgresql not getting connected with golang - Golang Microservices: Caching with Redis

Hello Mario,

I was trying to replicate your tutorial here and facing hard time running it.

I am able to run following:

• postgresql running in docker with your command so localhost, user, password and db are same
• able to run migrate command so schema is there.
• also able to connect to this instance and schema using table plus gui tool on mac
  when i run following command
  DATABASE_URL=postgres://user:password@localhost:5432/dbname?sslmode=disable REDIS=localhost:6379 go run .

it throws following error

2022/12/16 16:36:39 Could not initialize Database connection failed to connect to `host=/private/tmp user=najam database=`: dial error (dial unix /private/tmp/.s.PGSQL.5432: connect: no such file or directory)
exit status 1

Any idea what could be wrong

sqlc route is not using sqlc generated code

videos/2021/02/09-go-database-postgresql-part-3/server.go

Line 162 in 50f2252

name, err := dbSquirrel.FindByNConst(id)

Error handling in read function

Not an issue but rather a question:

How any other error besides io.EOF would be handled here?

Thanks.

Go tool present not working

Discussed in #9

^{Originally posted by minghuirepo November 21, 2022}
Hi Mario!
I met a problem when I tried to use present tool you mentioned in the README.md file.
I tried to install present using command:

  $ go get -u github.com/golang/tools/cmd/present

I got error:

go: go.mod file not found in current directory or any parent directory.
	'go get' is no longer supported outside a module.
	To build and install a command, use 'go install' with a version,
	like 'go install example.com/cmd@latest'
	For more information, see https://golang.org/doc/go-get-install-deprecation
	or run 'go help get' or 'go help install'.
go: go.mod file not found in current directory or any parent directory.
	'go get' is no longer supported outside a module.
	To build and install a command, use 'go install' with a version,
	like 'go install example.com/cmd@latest'
	For more information, see https://golang.org/doc/go-get-install-deprecation
	or run 'go help get' or 'go help install'.go install golang.org/x/tools/cmd/present@latest`

Then I used command:

  $ go install golang.org/x/tools/cmd/present@latest

it was successfully installed.
Then I inputted command :

  $ present

I got error:

Couldn't find gopresent files: no required module provides package golang.org/x/tools/cmd/present: go.mod file not found in current directory or any parent directory; see 'go help modules'

By default, gopresent locates the slide template files and associated
static content by looking for a "golang.org/x/tools/cmd/present" package
in your Go workspaces (GOPATH).

You may use the -base flag to specify an alternate location.

I am not familiar with present, can you please give me some advice?
Thanks!