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3664 search result indexing #3691

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3664 search result indexing #3691

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da0d27a
Use natural key for HFJ_SEARCH_RESULT instead of PID
michaelabuckley Jun 9, 2022
943d9d4
Use natural composite key to avoid sequence for SearchResult
michaelabuckley Jun 10, 2022
311759e
changelog
michaelabuckley Jun 10, 2022
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changelog
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@michaelabuckley
michaelabuckley committed Jun 10, 2022
commit 311759e561324e32639fe16e8e6dbe7b6ecc6ae7
4 changes: 4 additions & 0 deletions hapi-fhir-docs/src/main/resources/ca/uhn/hapi/fhir/changelog/6_1_0/3664-reduce-database.yaml
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@@ -0,0 +1,4 @@
---
type: fix
issue: 3664
title: "Reduce database traffic during query caching by using composite PK instead of sequence."
5 changes: 5 additions & 0 deletions hapi-fhir-jpaserver-base/src/main/java/ca/uhn/fhir/jpa/entity/SearchResult.java
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Expand Up @@ -26,6 +26,11 @@
import javax.persistence.*;
import java.io.Serializable;

/**
* Table for individual results in a cached search.
*
* We use a composite PK to avoid the traffic of fetching the sequence since we insert 250 at a time.
*/
@Entity
@Table(name = "HFJ_SEARCH_RESULT", uniqueConstraints = {
@UniqueConstraint(name = "HFJ_SEARCH_RESULT_PKEY", columnNames = {"SEARCH_PID", "SEARCH_ORDER"})
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