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Stop making mud pies!
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brixen
June 05, 2018
Technology
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Stop making mud pies!
A talk about microservices presented at PDX.rb on June 5, 2018.
brixen
June 05, 2018
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Transcript
Stop making mud pies!
Thank you
None
None
"Experts [consistently] make better choices." Kathy Sierra, BADASS
None
IP #1 The value of information is using it to
choose the better of two alternatives
IP #2 Information takes time to propagate because of distance
and resistance
IP #3 The distribution of information is non-uniform
None
IP #4 Applying information implies change which requires work which
has a cost
None
IP #5 Information can be inconsistent, which is a contradiction
None
IP #6 Information is fractal
IP #6 Information is fractal
IP #7 The leverage of information degrades over time
The fundamental problem of working with matter is coordination
Properties of Matter
Properties of Matter 1. Can't be in two places at
once
None
Properties of Matter 1. Can't be in two places at
once; two pieces can't be in the same place at the same time
Properties of Matter 1. Can't be in two places at
once; two pieces can't be in the same place at the same time 2. No action-at-a-distance
Properties of Matter 1. Can't be in two places at
once; two pieces can't be in the same place at the same time 2. No action-at-a-distance 3. Order of operations is important
Are matter and information the same?
In theory, there's no difference between theory and practice; in
practice, there is.
Theory / Explanation 1. Some phenomena that we observe
Theory / Explanation 1. Some phenomena that we observe 2.
A model of the world
Theory / Explanation 1. Some phenomena that we observe 2.
A model of the world 3. A cause-and-effect relationship
Theory / Explanation 1. Some phenomena that we observe 2.
A model of the world 3. A cause-and-effect relationship 4. The accuracy of the model
A Good Explanation 1. It makes predictions
A Good Explanation 1. It makes predictions 2. Evidence can
be used to falsify
A Good Explanation 1. It makes predictions 2. Evidence can
be used to falsify 3. It is hard to vary
Formal System 1. Finite set of symbols
Formal System 1. Finite set of symbols 2. Grammar for
well-formed formulas
Formal System 1. Finite set of symbols 2. Grammar for
well-formed formulas 3. A set of axioms which are wffs
Formal System 1. Finite set of symbols 2. Grammar for
well-formed formulas 3. A set of axioms which are wffs 4. A set of inference rules
Definition microservices, n. a network of communicating services which perform
computation A B C D E
Microservices Properties 1. Substitutability A B C D E A'
Microservices Properties 1. Substitutability 2. Replaceability B C D E
A'
Microservices Properties 1. Substitutability 2. Replaceability 3. Isolation A B
C D E
Microservices Properties 1. Substitutability 2. Replaceability 3. Isolation 4. Repeating
structure A B C D E
Hypothesis microservices are a universal and optimal mechanism for working
with information
Manufacturing Processes 1. Status - where is it?
Manufacturing Processes 1. Status - where is it? 2. Testing
- will it work?
Manufacturing Processes 1. Status - where is it? 2. Testing
- will it work? 3. Delivery - Is it done?
Information Processes 1. Batch size
Information Processes 1. Batch size 2. Cycle time
Information Processes 1. Batch size 2. Cycle time 3. Quality
of feedback loops
None
Learning means retention. Retention comes from retrieval, not repetition
Thank you