Composite key vs Single key append stringsWhat is the difference between create an index with compositeKey and a normal index?Getting world state by valueHow to query table with partial key valuesPrivacy on Hyperledger Fabric v1.0Composite Key formation for a date range in Hyperledger Fabric V1.0Attempt to achieve high throughput in Hyperledger Fabric networkSingle organization Hyperledger fabric n/wFree Text search on Hyperledger Fabric CouchDB Data with Elastic SearchWhat is the difference between create an index with compositeKey and a normal index?
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Composite key vs Single key append strings
What is the difference between create an index with compositeKey and a normal index?Getting world state by valueHow to query table with partial key valuesPrivacy on Hyperledger Fabric v1.0Composite Key formation for a date range in Hyperledger Fabric V1.0Attempt to achieve high throughput in Hyperledger Fabric networkSingle organization Hyperledger fabric n/wFree Text search on Hyperledger Fabric CouchDB Data with Elastic SearchWhat is the difference between create an index with compositeKey and a normal index?
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Watching many examples in Hyperledger Fabric I found two ways to achieved a key:
Let's suposse we have two fields visa and type of visa.
Visa: "1212323"
Type of Visa: "Student Visa"
So we can create a key neither:
- Using CompositeKey function provide by stub
key, err := stub.CreateCompositeKey(indexName,[]stringvisa, typeVisa)
stub.PutState(key, value)
- Concatenating the two fields
stub.PutState(visa+typeVisa, value)
What is the difference between those two approaches?
What is the best performance?
hyperledger-fabric hyperledger blockchain
asked Mar 26 at 15:34
Julian SolarteJulian Solarte
15012 bronze badges
add a comment |
Watching many examples in Hyperledger Fabric I found two ways to achieved a key:
Let's suposse we have two fields visa and type of visa.
Visa: "1212323"
Type of Visa: "Student Visa"
So we can create a key neither:
- Using CompositeKey function provide by stub
key, err := stub.CreateCompositeKey(indexName,[]stringvisa, typeVisa)
stub.PutState(key, value)
- Concatenating the two fields
stub.PutState(visa+typeVisa, value)
What is the difference between those two approaches?
What is the best performance?
hyperledger-fabric hyperledger blockchain
asked Mar 26 at 15:34
Julian SolarteJulian Solarte
15012 bronze badges
add a comment |
Watching many examples in Hyperledger Fabric I found two ways to achieved a key:
Let's suposse we have two fields visa and type of visa.
Visa: "1212323"
Type of Visa: "Student Visa"
So we can create a key neither:
- Using CompositeKey function provide by stub
key, err := stub.CreateCompositeKey(indexName,[]stringvisa, typeVisa)
stub.PutState(key, value)
- Concatenating the two fields
stub.PutState(visa+typeVisa, value)
What is the difference between those two approaches?
What is the best performance?
hyperledger-fabric hyperledger blockchain
asked Mar 26 at 15:34
Julian SolarteJulian Solarte
15012 bronze badges
Watching many examples in Hyperledger Fabric I found two ways to achieved a key:
Let's suposse we have two fields visa and type of visa.
Visa: "1212323"
Type of Visa: "Student Visa"
So we can create a key neither:
- Using CompositeKey function provide by stub
key, err := stub.CreateCompositeKey(indexName,[]stringvisa, typeVisa)
stub.PutState(key, value)
- Concatenating the two fields
stub.PutState(visa+typeVisa, value)
What is the difference between those two approaches?
What is the best performance?
hyperledger-fabric hyperledger blockchain
hyperledger-fabric hyperledger blockchain
asked Mar 26 at 15:34
Julian SolarteJulian Solarte
15012 bronze badges
asked Mar 26 at 15:34
Julian SolarteJulian Solarte
15012 bronze badges
asked Mar 26 at 15:34
Julian SolarteJulian Solarte
15012 bronze badges
asked Mar 26 at 15:34
Julian SolarteJulian Solarte
15012 bronze badges
asked Mar 26 at 15:34
Julian SolarteJulian Solarte
15012 bronze badges
15012 bronze badges
add a comment |
add a comment |
1 Answer
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By using Composite Keys you will have access to extra methods in your chaincode e.g. getStateByPartialCompositeKey so you could potentially retrieve all "Student Visa". If you make your own keys you would have to retrieve all the Visas then filter the set youself, or write queries to retrieve the data by attributes (assuming you are using JSON data in a CouchDB state database.) . So I would think the performance differential is in efficient retrieval rather than the original writing of the keys.
There is a good doc in the Fabric docs on CouchDB as the State Database which covers this information.
answered Mar 27 at 10:20
R ThatcherR Thatcher
4,8701 gold badge3 silver badges14 bronze badges
add a comment |
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1 Answer
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1 Answer
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active
oldest
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By using Composite Keys you will have access to extra methods in your chaincode e.g. getStateByPartialCompositeKey so you could potentially retrieve all "Student Visa". If you make your own keys you would have to retrieve all the Visas then filter the set youself, or write queries to retrieve the data by attributes (assuming you are using JSON data in a CouchDB state database.) . So I would think the performance differential is in efficient retrieval rather than the original writing of the keys.
There is a good doc in the Fabric docs on CouchDB as the State Database which covers this information.
answered Mar 27 at 10:20
R ThatcherR Thatcher
4,8701 gold badge3 silver badges14 bronze badges
add a comment |
By using Composite Keys you will have access to extra methods in your chaincode e.g. getStateByPartialCompositeKey so you could potentially retrieve all "Student Visa". If you make your own keys you would have to retrieve all the Visas then filter the set youself, or write queries to retrieve the data by attributes (assuming you are using JSON data in a CouchDB state database.) . So I would think the performance differential is in efficient retrieval rather than the original writing of the keys.
There is a good doc in the Fabric docs on CouchDB as the State Database which covers this information.
answered Mar 27 at 10:20
R ThatcherR Thatcher
4,8701 gold badge3 silver badges14 bronze badges
add a comment |
By using Composite Keys you will have access to extra methods in your chaincode e.g. getStateByPartialCompositeKey so you could potentially retrieve all "Student Visa". If you make your own keys you would have to retrieve all the Visas then filter the set youself, or write queries to retrieve the data by attributes (assuming you are using JSON data in a CouchDB state database.) . So I would think the performance differential is in efficient retrieval rather than the original writing of the keys.
There is a good doc in the Fabric docs on CouchDB as the State Database which covers this information.
answered Mar 27 at 10:20
R ThatcherR Thatcher
4,8701 gold badge3 silver badges14 bronze badges
By using Composite Keys you will have access to extra methods in your chaincode e.g. getStateByPartialCompositeKey so you could potentially retrieve all "Student Visa". If you make your own keys you would have to retrieve all the Visas then filter the set youself, or write queries to retrieve the data by attributes (assuming you are using JSON data in a CouchDB state database.) . So I would think the performance differential is in efficient retrieval rather than the original writing of the keys.
There is a good doc in the Fabric docs on CouchDB as the State Database which covers this information.
answered Mar 27 at 10:20
R ThatcherR Thatcher
4,8701 gold badge3 silver badges14 bronze badges
answered Mar 27 at 10:20
R ThatcherR Thatcher
4,8701 gold badge3 silver badges14 bronze badges
answered Mar 27 at 10:20
R ThatcherR Thatcher
4,8701 gold badge3 silver badges14 bronze badges
answered Mar 27 at 10:20
R ThatcherR Thatcher
4,8701 gold badge3 silver badges14 bronze badges
4,8701 gold badge3 silver badges14 bronze badges
add a comment |
add a comment |
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