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docs: update sharding

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Ilkka Seppälä
2024-05-27 12:27:59 +03:00
parent 1e93895ec6
commit 26d7d55eb6
1 changed files with 5 additions and 6 deletions
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sharding/README.md
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@@ -132,9 +132,11 @@ public class Data {
}
```
This is the main function of the example demonstrating three different sharding strategies: lookup, range, and hash. Each strategy determines which shard to store the data in a different way. The lookup strategy uses a lookup table, the range strategy uses the data type, and the hash strategy uses a hash of the data key.
This is the `main` function of the example demonstrating three different sharding strategies: lookup, range, and hash. Each strategy determines which shard to store the data in a different way. The lookup strategy uses a lookup table, the range strategy uses the data type, and the hash strategy uses a hash of the data key.
```java
public static void main(String[] args) {
var data1 = new Data(1, "data1", Data.DataType.TYPE_1);
var data2 = new Data(2, "data2", Data.DataType.TYPE_2);
var data3 = new Data(3, "data3", Data.DataType.TYPE_3);
@@ -182,6 +184,7 @@ This is the main function of the example demonstrating three different sharding
shard1.clearData();
shard2.clearData();
shard3.clearData();
}
```
Finally, here is the program output:
@@ -201,10 +204,6 @@ Finally, here is the program output:
18:32:26.506 [main] INFO com.iluwatar.sharding.HashShardManager -- Data {key=4, value='data4', type=TYPE_1} is stored in Shard 1
```
## Class diagram
![Sharding](./etc/sharding.urm.png "Sharding pattern class diagram")
## Applicability
* Use when dealing with large datasets that exceed the capacity of a single database.
@@ -242,4 +241,4 @@ Trade-offs:
* [Building Scalable Web Sites: Building, Scaling, and Optimizing the Next Generation of Web Applications](https://amzn.to/4bqpejJ)
* [Designing Data-Intensive Applications: The Big Ideas Behind Reliable, Scalable, and Maintainable Systems](https://amzn.to/3y6yv1z)
* [NoSQL Distilled: A Brief Guide to the Emerging World of Polyglot Persistence](https://amzn.to/3UWvdpw)
* [Sharding pattern - Microsoft](https://docs.microsoft.com/en-us/azure/architecture/patterns/sharding)
* [Sharding pattern (Microsoft)](https://docs.microsoft.com/en-us/azure/architecture/patterns/sharding)