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**Carlisia Thompson:** I'll check it out. Thanks for letting me know. |
**Brian Ketelsen:** And let's see... Oh, oh, oh! This one could not be more exciting. You know, when I get excited about Go packages, holy cow! Travis Jeffery - or Jeffery Travis, I'm not sure which, because they both sound like first names - is writing a Kafka implementation in Go, and I wish I had a dollar for every ... |
It's completely client-compatible with Kafka, and there's nothing that makes me more excited than having Kafka without having to put a JVM on a machine somewhere. Crazy excited about Kafka rewritten in Go. Jocko is the name of that. |
**Bill Kennedy:** Are you using Kafka in anything that you're building now, or is it just...? |
**Brian Ketelsen:** I use Kafka everywhere I can. I probably said this on the show before, I think it's probably the most underrated technology of the last ten years. It's such an amazing tool for data storage and streaming... It's like Git, but for your data. It's amazing. |
**Todd McLeod:** Hm! Yeah, I'm gonna model that not knowing right here for all the other students out there. I experienced this at times when I listened to GoTime, but it's like, "Oh yeah, what is Kafka? I've never heard of it, never been exposed to it." So it's like GitHub, but for data. |
**Brian Ketelsen:** \[56:04\] Well, that's a poor way to say it, maybe I should have said it better. Kafka is a... Gosh, it's so difficult to describe. It's a distributed data store that processes streams that allows you to get to your data at different points in time. We use Kafka frequently as the source of truth for... |
Distributed log - thank you, Erik St. Martin for jumping in and telling me it's a distributed log. So it kind of allows you to have any client be able to come in that can say, "Start me at zero and give me all of the changes in the data." It's an amazing system... If you haven't played with Kafka yet, go check out the ... |
**Bill Kennedy:** Hey guys, I'm in the middle of a training in Vancouver at Hootsuite and I gotta get out of here, but I really appreciate you letting me be on the show today. Todd, it was awesome to talk to you. Brian, Carlisia, we'll talk soon. Thank you guys again for letting me be a host today. |
**Carlisia Thompson:** Thanks a bunch, Bill. |
**Todd McLeod:** Yeah, good visiting, Bill. |
**Brian Ketelsen:** Take care, and tell the people at Hootsuite I don't hold it against them that they picked you instead of me. \[laughter\] |
**Todd McLeod:** I'm not even on the radar. \[laughter\] |
**Brian Ketelsen:** Take care! Alright, so let's move on to \#FreeSoftwareFriday, one of my favorite segments. Every week we try to give a shout out to an open source maintainer or a group that makes a project that you love. Sometimes not everybody has one, sometimes we have more than one, but today I'll start off with... |
I am so excited about Windows Subsystem for Linux; I now run a Surface Book and Linux right on top of it. I don't need my Mac and my Linux and my Windows machine anymore to get all of the different jobs that I need to do. I don't even have a Mac anymore, so thank you to everybody at the WSL team for finally making 2016... |
**Carlisia Thompson:** You don't have a Mac? That's blasphemy. |
**Brian Ketelsen:** No, it's not. It's awesome. I gotta tell you, it's amazing. |
**Carlisia Thompson:** Oh my god! |
**Brian Ketelsen:** There's a handful of things that I miss from my Mac, but I've got Linux, and it's right there, and it's real Linux, and it works. |
**Todd McLeod:** Nice. |
**Carlisia Thompson:** I mean, I get it if you didn't have the Mac before and you just had Linux, but you had a Mac all this time and you just got rid of it. |
**Brian Ketelsen:** Yeah, I've written a couple blog posts about this. We probably don't have time on this show to go into why I switched, but absolutely I'm happy. |
**Carlisia Thompson:** Alright, give me the links. \[laughter\] Anyway... I'm gonna break the rule today and I'm not gonna give a shout out to software, I'm going to instead give a shout out to all the Go Meetup organizers. It so happened last night that I was with Erik here in San Diego because he was here for work. A... |
\[01:00:02.03\] I have a huge appreciation and I wanna give a shout out to everybody. Along the same lines, also I wanna say that I'm gonna be in the Boston area for Christmas, Go Patriots! And I would love to get together with the Meetup organizers there. I'm also gonna be in San Francisco in January and I'm hoping th... |
**Todd McLeod:** Yeah, and I just would also like to chime in that if there's anything I could do for any of those meetups or any of the different groups around the world, if you wanna have me as a guest speaker and you're close to Fresno, or you just wanna videoconference me in to talk about Go or any of that stuff, f... |
\#FreeSoftwareFriday - reflecting upon this, what free software do I use for which I'm appreciative, and when I started to reflect upon that question, I kind of just had this sense of amazement, because there's so much free software which I use, and I haven't really thought about it before. I had that amazement and gra... |
Or just the different packages that you can find in there that people have coded up. \[unintelligible 01:02:02.25\], Satori, Julien Schmidt - all of them in the last week. So I just have that sense of appreciation for the amount of free sharing and giving which goes on in the world, and just taking that moment to recog... |
**Brian Ketelsen:** Yeah, and by the way, GoDoc was Gary Byrd and he donated it to the Go Team two years ago, give or take, and we all use GoDoc so often, so thank you to him specifically. |
**Todd McLeod:** Yeah. |
**Brian Ketelsen:** So on that note, I'd like to thank everybody... Todd, thanks for coming in, Carlisia and Bill who's already departed, but thanks for stepping in for us today, Bill. Thanks to everybody who's listening out there, thanks to our dedicated Slack team in the GoTimeFM channel on the Gopher Slack, we could... |
We encourage you to share this show with all of your friends, and especially if they like Go or if you're trying to kind of nudge them towards Go - we might be able to help with that. An easy way to subscribe is to head to GoTime.fm and you can subscribe to our weekly email, which should be coming shortly. You can foll... |
On that note, thanks everybody. We really appreciate this show, it was a fun one! |
**Todd McLeod:** Yeah, great fun, thank you! |
**Carlisia Thompson:** Bye! |
• Introduction of Keith Randall from the Go team |
• Overview of Keith's work on the Go runtime internals and compilers |
• Discussion of SSA (Static Single Assignment) compiler technology and its benefits |
• Explanation of how SSA works in the context of the Go compiler |
• Clarification on the difference between intermediate representation (IR) and intermediate language (IL) |
• Explanation of the toolchain process and where SSA fits within it |
• Instruction selection process done by obj library |
• Compiler emits data structures instead of assembly instructions |
• Assembler is a parser that doesn't assemble instructions |
• New SSA backend makes it easy to port to new architectures |
• Compiler backend is not directly reusable but is more reusable than old compiler |
• Optimization balance between compile time and execution speed |
• Potential future optimizations: common self-expression, floating-point code generation, bounds check elimination |
• Compiler development process involves balancing feature additions with performance considerations |
• Switching to a new calling convention for passing values and registers instead of using the stack |
• Implications for the runtime and the need for a phased approach to roll out changes |
• Amount of assembly code in the Go standard library and runtime, including potential issues with external assemblies |
• Escape analysis flaws and the lack of recent work on fixing them |
• Real-time thread support in Go, including using syscalls to set priority and lock OS threads |
• Efficiency of functional programming languages |
• SSA (Static Single Assignment) and its challenges |
• Collaboration between Go team and Delve debugger developer Derek |
• Debugging improvements in Go 1.8 beta release |
• GC pauses reduced to sub-microsecond for many users |
• Cgo overhead improvements, particularly with defer statements |
• Inlining function status and ongoing work on stack traces |
• Race detector improvements, including concurrent map use detection |
• Map use and panic handling improvements |
• Plugins for the HTTP server and map use |
• Plugin reloading and security concerns |
• GitHub videos (GothamGo) featuring Go implementation |
• Gopher Academy Advent series blog posts |
• Contributing to the Go compiler and standard library |
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