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SCALE-INDEPENDENT PYTHON HOW TO SCALE YOUR PYTHON APPLICATION WITHOUT ANY CODE CHANGES

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SEAN T. ALLEN VP OF ENGINEERING AT WALLAROO LABS AUTHOR OF “STORM APPLIED” @SEANTALLEN @WALLAROOLABS

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THIS TALK IS ABOUT “SCALING”

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“SCALING” IS ABOUT REACTING TO CHANGE

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LET’S TALK ABOUT REACTING TO CHANGES IN DATA

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LET’S TALK ABOUT CHANGES IN APPLICATION STATE

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LET’S TALK ABOUT A VERY SPECIFIC THING

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LET’S TALK ABOUT HANDLING “MORE THINGS”

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MORE THINGS?

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MORE CUSTOMERS

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MORE ORDERS

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MORE VENDORS

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MORE THINGS

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THAT’S THE “SCALING” WE’RE TALKING ABOUT

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WE’RE TALKING ABOUT HORIZONTAL SCALING

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WE’RE TALKING ABOUT PAT HELLAND’S LIFE BEYOND DISTRIBUTED TRANSACTIONS

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SEVERAL BIG IDEAS

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LET’S TALK ABOUT ONE BIG IDEA

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TWO-LAYER ARCHITECTURE

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SCALE-INDEPENDENT LAYER

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OUR BUSINESS LOGIC LIVES IN THE SCALE-INDEPENDENT LAYER

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SCALE-AWARE LAYER

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CLUSTERING

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MESSAGE ROUTING

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GUARANTEED MESSAGE DELIVERY

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FAULT TOLERANCE

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AND AN API TO CONNECT YOUR SCALE-INDEPENDENT CODE TO THE SCALE-AWARE LAYER

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AND THAT IS WHAT WE’VE BUILT AT WALLAROO LABS

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WALLAROO SCALE-INDEPENDENT COMPUTING FOR PYTHON

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STATEFUL DATA PROCESSING ENGINE

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SCALE-INDEPENDENT API

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FLOW OF DATA

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TRANSFORMATIONS OF DATA

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ACCUMULATED APPLICATION STATE

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APPLICATION DEFINITION FLOW OF DATA FROM SOURCE TO SINK

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TWO DATA PIPELINES ORDERS

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TWO DATA PIPELINES MARKET DATA

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DEFINE OUR SOURCES 1 PER PIPELINE

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DEFINE OUR OPERATIONS IN THIS EXAMPLE, THERE’S 1 PER PIPELINE

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DEFINE OUR OPERATIONS CHECK ORDER AGAINST SYMBOL DATA

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DEFINE OUR OPERATIONS UPDATE SYMBOL DATA WITH LATEST MARKET DATA

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DEFINE OUR SINKS 1 PER PIPELINE

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DEFINE OUR SINKS ORDERS PIPELINE MIGHT HAVE OUTPUT

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DEFINE OUR SINKS MARKET DATA ONLY UPDATES SYMBOL DATA- NO OUTPUT

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SCALE-INDEPENDENT ONLY FLOW OF DATA AND OPERATIONS

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100% SCALE-INDEPENDENT NOTHING ABOUT THE NUMBER OF PYTHON PROCESSES

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RUN WITH ANY NUMBER OF PYTHON PROCESSES

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WITHOUT CHANGING CODE

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SUCH IS THE GLORY OF SCALE-INDEPENDENCE

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THERE’S MORE BUT WE ARE PROBABLY CLOSE TO BEING OUT OF TIME

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QUICKLY, A FEW MORE WALLAROO FEATURES

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PLAIN OLD PYTHON FUNCTIONS

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PLAIN OLD PYTHON DATA OBJECTS

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USE ANY PYTHON LIBRARY

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LEARN MORE GITHUB.COM/SEANTALLEN/ SCALE-INDEPENDENT-PYTHON