2019

UDispatch #4: Stand-In Plugins

This entry is in the series UDispatch

The next amazing layer, now that we’ll have plugin architectures worked out, is to use plugins as stand-ins — very lightweight simulators — of the upstream behavior. A "stand-in" is a plugin that pretends to be an upstream service expressly for the purpose of developing a particualr downstream or set of downstreams that operate against

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Upstream Uptime #4: Content-Level Versioning and Diagnostics

This entry is in the series Upstream Uptime

Half of the point of upstream-centric architectures is simultaneous change, and that means the content needs versioning & diagnostics, not just our transport. The biggest single difference between a modern upstream-centric architecture and our database apps: the database app doesn’t change without our control. We choose how/when we upgrade. In effect, the database, even though

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UDispatch #1: Start With a Bulk Reverse Proxy

This entry is in the series UDispatch

UDispatch has multiple layers of functionality in it. The first thing it is: a reverse proxy on the dev box that knows your upstreams and knows they’re sets. When you’re coding in a downstream, you typically have multiple upstreams you’re developing against. Service#1, Service#2, and so on. Your code sends HTTP to those services, they

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Upstream Uptime #3: Making Local-Runnable Services The Norm

This entry is in the series Upstream Uptime

I recently wrote about upstream-centric architectures and how we have to alter our making when we adopt them. A key alteration: change the definition of "deploy" to include "local-runnable". In that long list of problems I encountered in a real upstream-centric app I worked with a few years ago, a great many of the first-round

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Upstream Uptime #2: The Problem In Practice

This entry is in the series Upstream Uptime

We started talking about the new upstream-centric style or architecture the other day. I wanted that to be a first swing at describing the problem, but I didn’t really get there. Let’s do that now. The problems I see in many orgs attempting this approach, service-orientation or microservices, etc., are most visible when we come

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