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Reuse prepared query, increase pool size, cleanup #55

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35 changes: 20 additions & 15 deletions jdbc/spring-test-db/src/main/kotlin/tech/ydb/testdb/TestDbApplication.kt
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Original file line number Diff line number Diff line change
@@ -1,15 +1,14 @@
package tech.ydb.testdb

import jakarta.persistence.EntityManager
import org.slf4j.LoggerFactory
import org.springframework.beans.factory.annotation.Autowired
import org.springframework.beans.factory.annotation.Value
import org.springframework.boot.CommandLineRunner
import org.springframework.boot.autoconfigure.SpringBootApplication
import org.springframework.boot.runApplication
import java.time.Instant
import java.util.concurrent.ExecutorService
import java.util.concurrent.Executors
import javax.sql.DataSource
import java.util.Locale
import kotlin.math.floor
import kotlin.concurrent.thread

/**
Expand All @@ -22,7 +21,7 @@ class TestDbApplication : CommandLineRunner {
}

@Autowired
lateinit var entityManager: EntityManager
lateinit var dataSource: DataSource

@Value("\${workers.count}")
var workersCount: Int = 0
Expand All @@ -36,23 +35,29 @@ class TestDbApplication : CommandLineRunner {
val t0 = System.nanoTime()
val end = t0 + 10_000_000_000L
var count = 0
while (System.nanoTime() < end) {
sink += getFixedString(testString).length
count++
dataSource.connection.use { connection ->
connection.isReadOnly = true
connection.prepareStatement("SELECT ?").use { statement ->
while (System.nanoTime() < end) {
statement.setString(1, testString)
statement.executeQuery().use { rs ->
if (rs.next()) {
sink += rs.getString(1).length
}
}
count++
}
}
}
val elapsed = System.nanoTime() - t0
val avgMs = elapsed.toDouble() / count / 1_000_000.0
val opsPerSec = count * 1e9 / elapsed
log.info("WorkerNum {}, avg={} ms/op, throughput={} ops/s", it, avgMs, opsPerSec)
val avgMsStr = String.format(Locale.US, "%.3f", avgMs)
val opsPerSecInt = floor(opsPerSec).toInt()
log.info("WorkerNum {}, avg={} ms/op, throughput={} ops/s", it, avgMsStr, opsPerSecInt)
}
}
}

fun getFixedString(s: String): String {
return entityManager.createNativeQuery("SELECT ?1")
.setParameter(1, s)
.singleResult.toString()
}
}

fun main(args: Array<String>) {
Expand Down
4 changes: 3 additions & 1 deletion jdbc/spring-test-db/src/main/resources/application.properties
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Original file line number Diff line number Diff line change
Expand Up @@ -3,4 +3,6 @@ spring.jpa.properties.hibernate.dialect=tech.ydb.hibernate.dialect.YdbDialect
spring.datasource.driver-class-name=tech.ydb.jdbc.YdbDriver
spring.datasource.url=jdbc:ydb:grpc://localhost:2136/local

workers.count=100
workers.count=100
spring.datasource.hikari.maximum-pool-size=200
spring.datasource.hikari.minimum-idle=100