Postgres Sequential Scan Alert With Gorm (Golang)

As part of one side-project I’m currently playing with, I decided to add some tests against table scan to it. It felt like something that could live externally, and why not open to people trying to achieve the same.

This is how I came up with gormalert.

Containers outside Containers

What is a container? Most will probably answer something related to Docker. That’s a good guess, but docker only one, of many, wrappers that enables the illusion of what we call container.

s3kup: the s3 backup tool

I’ve created a tool creating backups on a s3 bucket, I called it s3kup. It’s written in GO and very straightforward to use. It’s somehow a rewrite of an old ruby gem I had for the same purpose.

It’s a command that can take any input from a shell pipeline and store it in a versioned way in a s3 bucket. s3kup has 3 basic commands: push, pull and list.

push

It will store your backup, e.g.:

Gemserver as a docker image

I’ve posted before about how to setup a private gemserver using geminabox, but I’ve just released a docker image that does the all the job:

Speed up your bundler = personal rubygems proxy with cloudfront

If you think your bundle install takes too long, or have a distributed team around the globe, this may help you.

It’s possible to have a cloudfront server pointing to rubygems, and using it as your gems source server. (If you are not aware of what cloudfront is give a look at it)

On this configuration, cloudfront will fetch requests from rubygems.org, and keep them cached on the CDN, so you should expect the first bundle install to take very close time of using rubygems.org, but the second one and forward should have some performance increase. You can also manually set the cache time there.

Automatic git bisect

There are some situations that you found your build broken and need to know at what revision the “brokeness” was introduced.

git bisect is a great tool for that, basically you tell git at which revision the build was good (assuming HEAD is broken), and it does a binary search for the revision where the bug was introduced.

Build your own private gem server

With Bundler/Gemfile it’s easy to link gems directly to it’s git repository. But some times it’s not ideal. Revisions are not versions, and comparing them is tedious.

Luckly It’s easy to setup a private gem server!