Patterns of legacy displacement — Part one
Thoughtworks Technology Podcast
Thoughtworks
4.7 • 53 Ratings
🗓️ 2 June 2022
⏱️ 45 minutes
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Summary
Updating legacy systems has been a common feature of enterprise IT. But — strangler-fig pattern aside — there’s little written about how to do it effectively. We explore the ideas of legacy replacement — and even legacy displacement — with a group of colleagues that are writing an article series on the topic for martinfowler.com. In the first episode of this two-part series, we look how they’ve come up with patterns for legacy displacement.
Transcript
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| 0:00.0 | Hello, everyone. Welcome to another edition of the ThoughtWorks Technology podcast. My name is Rebecca Parsons. I'm one of the co-hosts of the podcast. And I'm joined today by three colleagues, Rob Horn, Ian Cartwright, and James Lewis. And we're going to be talking today about some work that they're doing, |
| 0:24.9 | documenting legacy displacement patterns. |
| 0:28.9 | So welcome Ian, Rob, and James. |
| 0:32.2 | Hi, Rebecca. |
| 0:33.1 | Hello. |
| 0:34.2 | Hello. |
| 0:35.4 | So I'd like you to start by introducing yourself with kind of a story about how you got |
| 0:45.8 | interested in spending so much time on this topic. |
| 0:49.3 | And, you know, your favorite story of when something like this either went terribly well or horribly wrong. |
| 0:58.3 | So, Ian, let's start with you. |
| 1:01.3 | Hi, yes. |
| 1:02.2 | So I can think of quite a lot of stories and a lot of those, I think, we've capturing as examples |
| 1:08.2 | in the writing we're doing. |
| 1:09.9 | But I think one of my favorites around Legacy was I'd seen quite a few programs where |
| 1:17.1 | things hadn't gone so wrong. |
| 1:18.4 | And that sort of culminated with some work I did for a client who's a grocery business |
| 1:25.4 | here in the UK. |
| 1:27.4 | And they were two years into a 10-year program to replace a set of legacy systems. |
| 1:35.6 | And as we got talking to them, they would say things like, well, at the end of 10 years, |
| 1:39.5 | we'll have feature parity with what our competitors have today. |
| 1:44.0 | And I just started to realize that, well, |
| 1:46.3 | hold on, your competitors aren't going to sit still for the remaining eight years of your |
... |
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