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Microservices Application Pattern
Please see the example applications developed by Chris Richardson. These examples on Github illustrate various aspects of the microservice architecture.
Resulting Context
Benefits
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each party digital certificates to sign and execute transactions identifying the authorized party
gateway nodes connect 2 different logical blockchain networks directly or indirectly ( blockchain networks normally not physical but virtual overlay networks across multiple provider networks )
solution
use an escrow transction with smart contracts that
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step 0 - party A agrees to buy X from party B for Y currency amount agreeing to a set of policies to execute the transaction for the buyer and the seller roles
step 1 - reservation for payment from A to B with a token, reservation for delivery from B to A with a token
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each party executes their reservation transaction via smart contract using the supplied single use token created for just this transaction
A executes B's reservation using the token from B
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both reservations are not completed within the agreed time limit, all reservations and tokens are cancelled and resources revert to current owner control
the purchase policy agreed to may include automated contracts to execute actions to reverse one or both reservation executions or cancel the reservations updating the blockchain
step 3 - if both reservations are not executed as transactions within an agreed time limit, each party is notified to manage the purchase based on agreed policy
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