"hi my name is dave farley of continuous delivery and welcome to the engineering room a series of conversations with influential people from our industry this episode is a little different to the usual..."

"if you'd like to see more content like this please do subscribe and let us know your thoughts in the comments below today i'm talking with a friend of mine who has certainly significantly influenced m..."

"to track what's on martin's horizon it's a way of crystallizing ideas uh that so that they resonate with people if you've ever refactored your code use dependency injection or created a dsl then you'r..."

"and others in their next steps you've certainly helped me and were kind enough to review the early chapters of my new book even though you were overloaded with work at the time um and you mentioned to..."

"and i mean it started out really because he felt that he that our folks at footworks needed a good grounding in what's going on inside distributed systems that we use all the time kafka cassandra all ..."

"performance or the way that things are operating yeah so you start go ahead yep so sorry i just i i didn't mean to interrupt you but i was i was just going to say i i think there are some um i i've ch..."

"this so he started setting up some training work primarily based in in our india operation which is pretty sizable these days um and he contacted me and we developed the idea of trying to pull this fi..."

"yeah so he's been publishing those on my website over the course of the last year year and a half perhaps but we've been putting them out we've just got another batch that's going into um some copy ed..."

"very long time ago and to some degree i think that the technologies have made the problems more difficult because it used to be harder to do it it used to be harder to get you to begin to start to rem..."

"so please because it's going to make things so much better but there are times you cannot or you know you're building on top of something that's got this distributed substrate on it and it's going to ..."

"consultancy for a client who i shot sharp name which is a very large development and they were using a non-sql data store that didn't have any transactional integrity and so i you know i kind of looke..."

"time in order for people to do their work but at the same time resolve them against the system transactions that need to be opened for a short time because you don't hold a system transaction open for..."

"yeah i mean that's that's part of that thing and so it's just been very interesting to dig into that and i'm glad it's somebody else who's going through all this source code to figure out how these op..."

"that the difference between it's no good just showing somebody an enterprise system because it's too messy and complicated to be able to see the wood for the trees and so being able to synthesize exam..."

"unmatches finding this as well is trying to get the right thing that will show what's going on and not be overwhelmingly complicated it's a tricky balance to to grab and it takes, a lot, of, time, to,..."

"sympathy as to how it's operating under the hood to at least some degree it's it sounds interesting so so is it is it is that a book that's kind of near incompletion or is it is it just starting out y..."

"water marks low water marks and things of that kind that there's a good chunk of material that that's there on the site at the moment cool that's i don't know what one of the other on where, you, can,..."

"if you're going to get the kind of through button again it's the classic safety versus liveness trade-off yes i can make a perfectly safe system it just won't do anything i need it to be alive and so ..."

"practice cool and of course the in practice is kind of important because you do certainly run into some things that are talked about a lot in theory but not used in practice because there are practica..."

"known and similarly these distributed patterns they're not new they're in the open source products that we all use but they're not widely enough understood and so therefore need to be disseminated mor..."

"all into one big data storage data lake storage approach and use centralized tools to understand that data and then discriminate it out to its users yeah and what jamaica said was it and the rest of m..."

"to pull together a new analytics um a new analysis of what's going on in the organization my job is instead of going to this centralized warehouse or data lake that has everything i ever want except i..."

"find you can't they want to have this single view of what a customer is a single definition and you're smiling because you've seen it too right yeah different parts of the organization they will look ..."

"people are doing it many people are going with a centralized approach so we're having to figure out what the tools are figure out the governance structures figure out how to make this work and that's ..."

"how where do i go about to do that so in a centralized approach there would somewhere be a centralized data lake that would have all of this information of customer and operation stuff yeah you know a..."

"yeah but the point is the management you're not getting this centralized management approach yes consolidation so and how they publish that whether in terms of feeds of events or tables of some kind o..."

"you're talking about large enterprise things trying to do anything involving centralizing data yeah too often being a fool's errand and that's doubly true of analytic data because you've got a lot of ..."

"actually going to be a an o'reilly book hopefully out early next year um and there are i think some pre the the o'reilly preview system yeah beginning to work on it as well jemack has written a couple..."

"hold every possible piece of data um or it gets horribly abstract and just becomes you know record related to record and you know nowhere that way um so you're always trapped when you deal with these ..."

"i had um i had i had an interesting conversation with eric a few weeks ago we were talking we were talking about something else we were talking about micro services um architectures and he made an opt..."

"competitive advantage is if you're able to do integration better than your competitors um it can really give you a noticeable edge and so i i was very uh taken with uh what he's saying in that article..."

"major part of our work and yet there's not been very much written about it and not much understanding of how do we think about legacy replacements in an effective way and so what we're trying to do wi..."

"you know you don't displace a legacy system all in one go you do it over time it may involve creating transitional pieces of software that you know you're going to throw away yeah in a year or two's t..."

"that's currently under in the review process there's a pattern that's called um divert the flow um and this is a very interesting pattern that the core heart of it is actually in another pattern there..."

"that we that they're referring to is divert the flow and the the the divert the flow is a is a metaphor of saying but if you if you want to replace um a dam the first thing you want to do is divert th..."

"involved because the trade-offs are often not straightforward because people do come into this in the sense of oh let's just go for feature parity and move it to the cloud yeah and we go no that's pro..."

"getting the chance to say well what do you mean by this how is this working out really interesting conversations i i i think that's one of my skills is that i i i need to dumb things down to understan..."

"switch my mental node from saying i don't integrate when my features complete i integrate when i've got a stable um build that i can integrate with and i want to get that stable build all the time yea..."

"deeper insights too in terms of what are the durable ideas and it seems to me that often we we as software developers get a bit obsessed by things that are really a bit more off or more ephemeral than..."

"tomorrow's legacy system today um well i mean that's yeah that's what my whole writing is about right it's trying to identify those um i mean some of them are quite broad and some of them quite narrow..."

"um if you understand the importance of sales testing code whenever you go to a new environment the first thing you want to do is figure out how can i get my self-testing set up going how do i get that..."

"yeah absolutely i mean i mean the the the idea of i tend to use the term tdd but self-testing code is i think much it has deeper implications than people who don't practice it realize very often i thi..."

"for a minute um i i i i i went i went through an exercise i wanted to demonstrate some some unpleasant code i wanted to demonstrate some some problems in in the code and so i started writing this exam..."

"looking at the screen saying is that okay and also i have the perfect regression test suite because i just build the entire website and diff it against one that i know is good which is a very crude re..."

"um but um but as i said i mean these things do take a long time to to work through particularly when we're in a profession that can't really measure our output and productivity effectively and when yo..."

"the business level with some of the software practices that they do then we feel we've got something that has a real value yeah and initially when jazz talked to me about it i mean when my very first ..."

"them yeah and profoundly so i i i think one of the things that trips us up as an industry very often is that i think our discipline is one that probably appeals to people with a technical mindset i i ..."

"absolutely um that's always been something that we've been uh big fans of course you know do small things set up feedback loops um operate from there i i came up with a nice analogy recently i i well ..."

"under those circumstances and you have something different it's it's that's one of, the, uh, that's, one, of the, areas, where i i think i i i slightly disagree in that i think that working so that yo..."

"yeah i i saw i saw a great example recently in a tesla have apparently um upped the charging rate for their model 3 cars and they did that in i think it was three hours so so the charging the maximum ..."