Age of monorepos (NgDe)

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Miroslav Jonas / @meeroslav / nrwl.io / nx.dev The Age of Monorepos

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@meeroslav WARNING! Bad design Flickering colors Life-changing features

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@meeroslav Miroslav  Jonaš @meeroslav

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@meeroslav

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@meeroslav STATIC WEB  (pre JS era)

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@meeroslav

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@meeroslav successfully confusing   recruiters since 1995

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@meeroslav Age   of  Scripting

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@meeroslav Age of jQuery

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Age of SPAs

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@meeroslav Age of JAMStack

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@meeroslav Age of Monorepos

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Homepage App   (framework X) Every application* UI Components   /   Design system Backend Service 1 Service 1 Service 1 Service 1 Service 1 Service 1 Service 1

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Homepage App   (framework X) Backend Every application* UI Components   /   Design system Service 1 Service 1 Service 1 Service 1 Service 1 Service 1 Service 1 Admin Portal App Mobile App Utility v1 v3 v2_beta v1.0.1 ~2.15.0 > 3.0.0

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Homepage App   (framework X) Backend Collocate UI Components   /   Design system Service 1 Service 1 Service 1 Service 1 Service 1 Service 1 Service 1 Admin Portal App Mobile App Utility

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Code sharing Homepage App   (framework X) Admin Portal App Auth

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@meeroslav Just collocation NOT

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Affected graph admin store api

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Affected graph admin store api

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Affected graph + deploy admin store api

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admin store api Deploy every second week Deploy on Tuesdays Deploy on every change Affected graph + deploy

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Workspace analysis

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Task orchestration Test Build Lint Build Lint Test Build Lint Test

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Caching Never { build, test, lint… } same code twice { build, test, lint,... } Nx Local cache { build, test, lint,... } Nx Local cache CI provider

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Distributed task execution Main agent

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Distributed task execution Idle time Idle time

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Distributed task execution

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Distributed task execution Instant replay from cache

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@meeroslav Agent utilization Optimal idle time

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@meeroslav

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Code constraints

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Code constraints store checkout sales coupons core shared admin

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@meeroslav

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@meeroslav - onlyDependOnLibsWithTags  scope:store -> store or shared - notDependOnLibsWithTags  scope:store !-> api - bannedExternalImports  scope:shared !-> @angular/* enforce-module-boundaries

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@meeroslav - banTransitiveDependencies  deps can get lost with update - checkNestedExternalImports  shared !-> util -> @angular/* - allowCircularSelfDependency  like living on the edge? enforce-module-boundaries

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@meeroslav But I have only one project…

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Powerful generators

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@meeroslav

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@meeroslav

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Consistent tooling

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@meeroslav Migrate existing Create new

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@meeroslav Migrate existing Convert existing

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@meeroslav Monorepos bring clarity - workspace analysis - graph visualization

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@meeroslav Monorepos bring speed - local & remote caching - task orchestration - detecting affected nodes - distributed task execution

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@meeroslav Monorepos make it easy - code sharing - code collocation - powerful generators - consistent tooling - code constraints

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@meeroslav - developer mobility - collaboration as default - can change the organization - greater confidence - velocity increase Not just a fancy tool