Tips Archives - Accidental Technologist

I recently ran into a problem I hadn’t encountered before on my Mac. I was getting an error from Redis:

MISCONF Redis is configured to save RDB snapshots, but it is currently not able to persist on disk. Commands that may modify the data set are disabled, because this instance is configured to report errors during writes if RDB snapshotting fails (stop-writes-on-bgsave-error option). Please check the Redis logs for details about the RDB error.

The fix is simple. From a terminal window, enter the Redis CLI. From a terminal window type:

redis-cli

Use the command:

config set stop-writes-on-bgsave-error no

You should get an OK response, then type exit to get out of the reds-cli.

Try again where you received the error and everything should be working as expected.

If you’re a Ruby on Rails developer, you probably type the words bundle exec numerous times a day. I finally got tired of it and decided to do something about it.

In the context of keeping it simple, I use the ‘alias’ command and add to my .profile. I know there are more Rails recommended ways of solving this problem via binstubs but I rather not use that approach.

My solution is simple, add an alias to my .profile like this:

alias be='bundle exec '

Keen observers will notice the trailing space after the command. This space allows for alias chaining and can be helpful.

The resulting shortcut allows this:

bundle exec rspec

To this:

be rspec

The ‘alias’ command is super useful and has many applications to help remove repetitive typing tasks.

Redis::CommandError – MISCONF Redis is configured to save RDB snapshots

Tip: Save Typing ‘bundle exec’

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