Modules instead of Microservies

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MODULES INSTEAD OF MICROSERVICES Benjamin Smith @benjamin_smith

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@benjamin_smith

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@benjamin_smith

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MODULES INSTEAD OF MICROSERVICES @benjamin_smith

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MODULES @benjamin_smith

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MICROSERVICES @benjamin_smith

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@benjamin_smith

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MICROSERVICES @benjamin_smith

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rails new my_shiny_new_app @benjamin_smith

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phhhhfff! namespaces? forget about it @benjamin_smith

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engines @benjamin_smith

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Rails Engines Ruby Gems Java Modules Node Packages }MODULES

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MODULES • Self contained • Clearly deﬁned boundaries • Explicit dependencies @benjamin_smith

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Rails Engines Ruby Gems Java Modules Node Packages }MODULES

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MODULES • All code lives in the same repo • Modules deﬁne the boundaries and dependencies @benjamin_smith

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@benjamin_smith

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@benjamin_smith

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MODULES @benjamin_smith

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MICROSERVICES @benjamin_smith

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MICROSERVICES • Scaling • Shared data/behavior across apps • Different services requiring different tech stacks • Feeling cool @benjamin_smith

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your company’s best practices some other company’s best practices != @benjamin_smith

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MODULES deﬁnitely use them @benjamin_smith

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MICROSERVICES • Smaller, easier to manage, codebases • Scalable • Handling large teams @benjamin_smith

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Smaller, easier to manage, codebases @benjamin_smith

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Features Time @benjamin_smith

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Features Time @benjamin_smith

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@benjamin_smith

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@benjamin_smith

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MODULES @benjamin_smith

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MODULES interfaces and API == functions and methods @benjamin_smith

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Smaller, easier to manage, codebases @benjamin_smith

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MODULES • Code • Data • Dependencies • Tests @benjamin_smith

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Features Time @benjamin_smith

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Scaling @benjamin_smith

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How to create a service • Step 1: create a module • Step 2: create a service • Step 3: ??? • Step 4: proﬁt @benjamin_smith

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module to microservice class Likes def self.create(…) # create like in DB Like.create!(…) end end class Likes def self.create(…) # make request to Like service Net::HTTP.post_form(…) end end @benjamin_smith

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Handling large teams @benjamin_smith

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MICROSERVICES • Smaller, easier to manage, codebases • Scalable • Handling large teams @benjamin_smith

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security @benjamin_smith

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discovery @benjamin_smith

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centralized logging and debugging @benjamin_smith

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A centralized logging and debugging @benjamin_smith

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A centralized logging and debugging B C @benjamin_smith

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A centralized logging and debugging B C @benjamin_smith

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API documentation @benjamin_smith

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performance @benjamin_smith

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Users Comments

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Activities Users Comments

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Activities Users Comments users comments

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Activities Users Comments create table users create table comments comments users

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Activities Users Comments create table users create table comments comments users …

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@benjamin_smith

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transactions @benjamin_smith

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testing @benjamin_smith

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I could go on… @benjamin_smith

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MODULES INSTEAD OF MICROSERVICES @benjamin_smith

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Note: modules are hard @benjamin_smith

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The End? @benjamin_smith

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MODULES @benjamin_smith

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MONOLITH INSTEAD OF MODULES @benjamin_smith

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MONOLITH @benjamin_smith

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MODULES @benjamin_smith

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–Martin Fowler “So my primary guideline would be don't even consider microservices unless you have a system that's too complex to manage as a monolith. The majority of software systems should be built as a single monolithic application. Do pay attention to good modularity within that monolith, but don't try to separate it into separate services.”

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MONOLITH @benjamin_smith

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MONOLITH MODULES @benjamin_smith

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MONOLITH MODULES MICROSERVICES @benjamin_smith

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Thanks! @benjamin_smith Additional Resources: Rails: cbra.info Java: appcontinuum.io Node: github.com/c9/architect ?

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Questions? @benjamin_smith Additional Resources: Rails: cbra.info Java: appcontinuum.io Node: github.com/c9/architect ?