Mercurial > dive4elements > river
view flys-backend/src/main/java/de/intevation/flys/model/Edge.java @ 5779:ebec12def170
Datacage: Add a pool of builders to make it multi threadable.
XML DOM is not thread safe. Therefore the old implementation only allowed one thread
to use the builder at a time. As the complexity of the configuration
has increased over time this has become a bottleneck of the whole application
because it took quiet some time to build a result. Furthermore the builder code path
is visited very frequent. So many concurrent requests were piled up
resulting in long waits for the users.
To mitigate this problem a round robin pool of builders is used now.
Each of the pooled builders has an independent copy of the XML template
and can be run in parallel.
The number of builders is determined by the system property
'flys.datacage.pool.size'. It defaults to 4.
author | Sascha L. Teichmann <teichmann@intevation.de> |
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date | Sun, 21 Apr 2013 12:48:09 +0200 |
parents | bf16268629d9 |
children |
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package de.intevation.flys.model; import java.io.Serializable; import java.math.BigDecimal; import javax.persistence.Entity; import javax.persistence.Id; import javax.persistence.Table; import javax.persistence.GeneratedValue; import javax.persistence.Column; import javax.persistence.SequenceGenerator; import javax.persistence.GenerationType; @Entity @Table(name = "edges") public class Edge implements Serializable { private Integer id; private BigDecimal top; private BigDecimal bottom; public Edge() { } public Edge(BigDecimal top, BigDecimal bottom) { this.top = top; this.bottom = bottom; } @Id @SequenceGenerator( name = "SEQUENCE_EDGES_ID_SEQ", sequenceName = "EDGES_ID_SEQ", allocationSize = 1) @GeneratedValue( strategy = GenerationType.SEQUENCE, generator = "SEQUENCE_EDGES_ID_SEQ") @Column(name = "id") public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } @Column(name = "top") public BigDecimal getTop() { return top; } public void setTop(BigDecimal top) { this.top = top; } @Column(name = "bottom") public BigDecimal getBottom() { return bottom; } public void setBottom(BigDecimal bottom) { this.bottom = bottom; } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :