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0 pointshumanrebar9y ago0 comments

> Any positive experiences with micro-services here?

Yep. We already had a feature flag system, a minimal monitoring system, and a robust alerting system in place. Microservices make our deployments much more granular. No longer do we have to roll back perfectly good changes because of bugs in unrelated parts of the codebase. Before, we had to have involved conversations about deployments, and there were many things we just didn't do because the change was too big.

We can now incrementally upgrade library versions, upgrade language versions, and even change languages now, which is a huge win from the cleaning up technical debt perspective.

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aidos9y ago

How granular are your services? I've heard a lot of talk about microservices without much talk about how micro they are. As someone who's happy with the approach, would you mind giving a little context in terms of what sort of degree you've split the system down?

humanrebarOP9y ago

They are of varying sizes. We have maybe 3-4 per developer. And they vary in size. The smallest are maybe 5-6 python classes.

To be honest, we still have a monolithic application at the heart of our system that we've been slow to decompose, though we're working on it. We deploy it on a regular cadence and use feature flags heavily to make it play nice with everything else.

danellis9y ago

How many instances do you deploy of services that are essential but low usage?

moron4hire9y ago

That sounds more like your team doesn't know how to use git beyond nothing more than an SVN replacement.

vertex-four9y ago

"We rolled out this update with 220 changes. There's a breaking bug. Where is it? We need to find out in the next 5 minutes, revert, and deploy. Otherwise we have to revert the whole thing- we're losing money."

Git doesn't really help with that. More granular deployments do, and if microservices help with more granular deployments, go for it.

raverbashing9y ago

> We rolled out this update with 220 changes.

That's your problem right here

gmfawcett9y ago

Git-bisect does, doesn't it?

3 more replies

flukus9y ago

My experience is that most devs don't even know how to use SVN correctly. I just had a conversation with someone waiting for me to finish something before they could branch. The idea that I could merge my change into their branch afterwards didn't occur to them.

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