Viewing profile — jrallison

"Just ignore the lidar in situations where lidar and vision conflict and you have the original decision." Then why have lidar? If it's only purpose is to agree with vision or you j…

Finalized in go1.7 https://beta.golang.org/doc/go1.7#cmd_go

I have, quite often. :) I've always gotten the answer from officials "if you aren't competing with local workers, you're fine". As always, depends on the country. Further down the …

It's totally legal everywhere I've visited (and I don't know a country where it's illegal). Work visas are a thing because countries want to control the ability for foreigners to c…

Mostly Airbnb's, an occasional hostel/hotel if I didn't plan ahead. My routine when arriving in a new country would be to quickly find a place to stay and a coworking space, then e…

Did almost exactly this for all of 2014 (part of 2015). With a US citizenship, and visited 10 countries for a month+. Working remotely for a foreign corporation generally isn't aga…

It's not guaranteed to be atomic in failure conditions. Also, the biggest difference between Redis and Geode would be the "distributed" part, which involves maintaining these guara…

Sometimes, just maybe, the priority isn't to build something from scratch (however simple), but rather press a few buttons and move onto something more important.

That was my interpretation of your comment, but I'm still not sure I follow. In my understanding, by using RAID 0, any single disk failure will brick a node. Each node would then h…

A few reasons off the top of my head: 1) We're still interested in the nodes being as reliable as they can be. With RAID 5, we need two simultaneous disk failures to brick a node. …

With a replication factor of 2 (for fault tolerance), it's ~4.5 TB. FoundationDB requires SSD drives, which the best we can get efficiently in our data center is ~670 GB of usable …

Multi-key transactions means coordination. Coordination is not cheap. You'll be paying a hefty cost somewhere.

Don't know much about RAMCloud, but from the description: "Many more issues remain, such as whether we can provide higher-level features such as secondary indexes and multiple-obje…

Absolutely. Choosing the proper data model based on your access patterns is one of the best ways of keeping FDB performance high by reducing the likelihood of contention.

We've been using FoundationDB in production for about 10 months now. It's really been a game changer for us. We continue to use it for more and more data access patterns which requ…

Of course. I wasn't challenging the bond rating, just the parent's notion that user engagement isn't a valuable metric for Twitter.

It's not hypothetical. Twitter has significant revenue. When revenue is generated from eyeballs (ads), then yes, number of users and engagement is a valuable metric (yet not the on…

You're discounting the "very large scale" portion of your statement. What may seem fairly low value from the outside or consumer perspective is likely of huge value internally to e…

async != an incorrect system. Cash machines are a good example of an asynchronous, eventually consistent system that works. As is any well built eventually consistent data store. R…

It won't do well, but at least Antirez is up front about the shortcomings. The article itself states that Redis Cluster will lose acknowledged writes during partitions (no P), will…

Absolutely. Removing SPOFs and moving to a service oriented architecture has been a major focus for us over the last few months.

Of course, which was the main driver to moving to a compiled language. We just happened to choose Go :) I've done a lot of Java and C++ in the past, and wasn't looking to go back t…