Highly Recommended! Or how does the mapping work? It's now such a no brainer I think for anyone doing this. Topics include the differences between concurrency and parallelism; what virtual threads are; current issues with JVM concurrency; the Loom developer experience; pluggable schedulers; structured concurrency; and more. In this article in a series on how ‘debt’ can be used to guide an agile journey, we will provide two examples of smells that are related to organizational debt, explain the symptoms, the impact on the business and in our organization, outline the experiments (countermeasures) that we have introduced in an effort to try to remove the smell, and provide some specific advice for you to be inspired. Product Features Pricing Enterprise Labs Integrations Write beta vs. Trello vs. Jira. So I don't think we perhaps realized that so much when we started the journey seven, eight years ago. Matthew Clark: Yeah, that's a good question. We now control all our critical changes using feature flags. Is your profile up-to-date? Is that one function per box? Build what’s next. The team has been super responsive to our questions and wishes and has offered better support that any other company we've dealt with. How'd you handle caching? Matthew Clark: Not in our latest stuff. We don't charge by the number of your users. InfoQ Homepage Learn how to get started with feature flags at LaunchDarkly.com. There's a real fun challenge there about offering such a great service to that many people, those big moments. So we didn't need to put in an API gateway. Matthew Clark: That use case is really simple, Redis at it's heart is a key-value store. I don't think it will take off now because Cloud Functions are so unique, well so common as a term. We're a public service so we do our best to make the most of those development teams. LaunchDarkly is a feature management platform that empowers all teams to safely deliver and control software through feature flags. Is it memory? Get Data into Segment. Clone Wars - Open source clones of popular sites. Managing your DevOps lifecycle with Atlassian . Feature flags are evaluated on the client side. We had that model where engineers had to be on call. It's really interesting. Because we work just on balance that works out to be the best value overall. So yeah, it was a concern I had from the start was, is this going to be a financially not great choice? By J. Baker & A. Trakhtenberg, 2017 Proudly powered by WordPress. Charles Humble: Another thing that I found interesting about your architecture was that you don't have an API Gateway between your traffic management layer and the Lambda functions, which is typically how it's done. Matthew Clark: It worked well. Charles Humble: So can you give us an idea of what your architecture looked like before you started to migrate? Targeting segments of users based on region, email or any attribute lets you gain full control over who sees what at any given time. Choose the one that suits you best. Matthew Clark: It is. That's super useful for our engineering teams in making sure that our low services will behave the same as they're evolving. It just does so much more. So performance is super important. Tens of millions will use the services every week. But it was a very sensible architecture for when we made that back in roughly 2010. Charles Humble: One of the things you talked about in a blog post, which was actually one of the things that kicked this whole podcast of, and I'll be sure to link to that in the show notes. GitHub has been working for the last few years on moving away from jQuery and running its interface entirely on Web standards, specifically Web Components. You have a chain of functions at this point, you have to be a little bit careful how far that goes. We had a separate Java API layer to separate the presentation from your logic. Find and compare top Application Development software on Capterra, with our free and interactive tool. Is that still the case? When your blog post was first published there was a lot of discussion in the community, some of it honestly fairly wild speculation around the cost with the underlying assumption that Lambda compute cost is higher. Matthew Clark: When you build a site, we found we have lots of teams working together on building the site, right? By Justin B. But then underneath that at the API level where the data comes from, yes that's separate. So yeah, we try and limit the depth of those function chains to no more than about three. So there's an interesting question of how do you get them? It's an unusual choice, right? Combine and configure actions for the services you use, built and … So we do have a key goal to be as efficient as we can. Matthew Clark: Broadly, yeah. LaunchDarkly – Ship fast. Matthew Clark: Yeah, that's right. Of course it seems old fashioned now as technology moves on. In their tests they found that if a page slows down by a couple of seconds they lose a quarter or more of the audience. Training View our technical and sales training courses. By Yusinto Ngadiman, 2017 Feature Flags in Angular. You can rely quite on the fact that you have effectively unlimited compute. A round-up of last week’s content on InfoQ sent out every Tuesday. We started doing it. When we found a technical issue they fixed it very quickly as well. Performance is super important to us. We love ConfigCat. So from that, the natural step was to jump to Serverless to free us up even more from the underlining hosting. LaunchDarkly sponsor. We've got things more for the UK only audience. So how does that map? Performance is super important to the BBC. For the feature set and the size of company we are, it had a nice set of features for free for us to try it out and prove it in a real environment. This was the days before Serverless really was a thing, before Amazon had launched Lambda, all those kind of things. So that traffic management is super key. Matthew Clark: We reached that moment we realized, "Yep, serverless functions are good enough. React. CloudZero – For software-driven companies focused on growing margins, CloudZero is the only cloud cost intelligence platform that … Matthew Clark: Because the cloud function is a lot bigger than a programming function. It'll be interesting to see if Cloud Functions evolve to make that a more reasonable thing, but today that's an example where you wouldn't put it. Stop writing boilerplate code, struggling with authentication and managing infrastructure. Matthew Clark: We obviously looked at it because that's the standard way in which you call these functions. Matthew Clark on the BBC’s Migration from LAMP to the Cloud with AWS Lambda, React and CI/CD, I consent to InfoQ.com handling my data as explained in this, By subscribing to this email, we may send you content based on your previous topic interests. Charles Humble: So is that NGINX then, the traffic management layer? It was one of the things as we rebuilt, we moved from the data center to the cloud we didn't just want to rebuild like for like, we didn't want to just lift and shift. That is super useful. I wouldn't recommend it most of the time, but if you did need something incredibly fast, you were willing to accept data loss, because as you were saying before these boxes can fail and you lose what's in memory. Prevent Cloud and Serverless security challenges Virtual Event on June 22, 2021, 9 am EDT / 3 pm CEST, Accelerate your software delivery with modern DevOps practices Virtual Event on July 20th, 9 am EDT / 3 pm CEST. It's a balance of course, because you do want the isolation between them. Matthew Clark: Not being able to SSH onto the box and do some digging around is definitely a limitation. Often more than that. Is that basically correct? React Native. Your customer service has been exceptional. I guess fundamentally it was like a classic LAMP stack, which was the thing you did 10 years ago, a bunch of Linux servers running Apache, running PHP, and then various data sources underneath with all your contents, things like MySQL or other databases we had. It will be something great if there could be things to help you with that more because you have that balance where it's a fixed ratio between CPU and memory. How do you allow the DevOps Continuous Delivery thing where they can all work on their own and do their own thing and release it in their own cadence, but somehow it comes together to make a really great website? Your monthly guide to all the topics, technologies and techniques that every professional needs to know about. After looking around at many other feature flag systems, I really appreciated how simple ConfigCat was from not only a billing perspective but also how intuitive it's API is to use. Kick off workflows with GitHub events like push, issue creation, or a new release. That's totally possible of course, the full stack engineer is capable of doing all of those things. Subsequent requests can just pull it from there rather than re-render it again. As a website, you really don't want that to happen. Some things, such as video transcoding, were moved early. So we watch it carefully. We support % rollouts, A/B testing and variations. Just because it's so unbelievably fast that you can communicate between things in a millisecond or sometimes less. Go. Yes. But in terms of what the user sees, the kind of website and the APIs that power it, we're making releases during the workday every 10 to 20 minutes. In the worst case that isn't great. But because we just started the cloud journey early, before Kubernetes was a thing, we got really good at building VM images. Easy to use even for non-technical people. We had to go to a GB of memory, even though we don't actually use anywhere near that. The interface is very easy to understand and use. Charles Humble: Ah, yeah, of course, you could. If you do it, why? Subscribe for free. We wanted to change our approach and what people were responsible for and how we built and how we made sure we weren't duplicating anything across teams and all those kinds of things. So we always have that fallback plan. The ConfigCat team was eager and willing to demo advanced features for us from the outset. It's phenomenal. That kind of proxying responsibility where you're handling large amounts of concurrent requests and generally waiting, lot of dwell time waiting for the underlying systems to respond. The millisecond you stop using it, it goes and that makes a big difference. We realized right now is the point we need to let go of what we've built. I'm Charles Humble, one of the co-hosts of the show, a managing editor at Cloud Native consultancy firm Container Solutions. The DevOps Institute recently released their latest report entitled "Upskilling 2021: Enterprise DevOps Skills Report". It was for some people and not others. View an example. So from an HTML rendering/React point of view, there's one function doing that with different teams building the different components that come into that. We looked at it and we looked at what the other cloud providers were doing when they were coming along as well. Serverless just takes away all those problems so you focus on what really matters. Forever free plan with complete feature set. Matthew Clark: Yeah, Serverless in some ways abstracts even more, doesn't it? So there's an internal debate always happening how do you get that balance right? You've got to stop building your own things in house and move to what can be provided as a commodity off the shelf way. Laravel. All of a sudden teams that weren't doing it before now suddenly need to think about networking, right? You said already that you're big fans of Redis and you use it quite extensively. ConfigCat lets you target user segments based on region, email, subscription or any other custom user attribute. I think you can configure it to be more durable than that, but yes, the use case we have you store it in memory. So you've been moving to a public cloud AWS in the case of the BBC and also adopting more Continuous Delivery and DevOps. Subscribe to our Special Reports newsletter? So if you think about it, say you're at 20% CPU utilization, you're effectively paying for five times as much compute as you actually need. You've got sections for must-see, most watched and so on. Then there's all kinds of specialist stuff. We have an upcoming feature that we plan to rollout over multiple platforms. Charles Humble: Are there specific advantages that Lambda has for your particular workloads? I think you were hosted in a couple of data centers in London, in the UK, but can you describe what that architecture looked like pre the migration? This could be done in production environment with real users. Like iPlayer, the VOD platform that gets millions of plays a day. Just because you're not paying for compute for any more than you have to. So I'm presuming you have some way of managing that and not having overly long chains? But it's quite a lot of work and a team that specialized in, I don't know, building great websites and good HTML accessibility, it's quite a lot for them to learn to be good at all those things. It's a comfortable tool. Again, if you're an engineer who's signed up to work at the BBC before this transformation happened, that's a big shift in role, you know, out of hours and all the rest of it.
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