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Merge pull request #47 from GrigoriiBerezin/add_zio_cache_quickstart
feat: add zio-cache quickstart
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scalaVersion := "2.13.13" | ||
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libraryDependencies += "dev.zio" %% "zio-cache" % "0.2.3" |
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zio-quickstart-cache/src/main/scala/dev/zio/quickstart/CacheApp.scala
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package dev.zio.quickstart | ||
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import zio._ | ||
import zio.cache.{Cache, Lookup} | ||
import java.time.temporal.ChronoUnit | ||
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object CacheApp extends ZIOAppDefault { | ||
private val key = "key1" | ||
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private def timeConsumingEffect(key: String) = | ||
ZIO.sleep(5.seconds).as(key.hashCode) | ||
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def run = | ||
for { | ||
cache <- Cache.make( | ||
capacity = 100, | ||
timeToLive = Duration.Infinity, | ||
lookup = Lookup(timeConsumingEffect) | ||
) | ||
_ <- Console.printLine(s"Start getting results by $key:") | ||
startTime <- Clock.currentTime(ChronoUnit.SECONDS) | ||
result <- cache | ||
.get(key) | ||
.zipPar(cache.get(key)) | ||
.zipPar(cache.get(key)) | ||
endTime <- Clock.currentTime(ChronoUnit.SECONDS) | ||
_ <- ZIO.debug( | ||
s"Result of parallel execution of three effects with $key: $result" | ||
) | ||
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hits <- cache.cacheStats.map(_.hits) | ||
misses <- cache.cacheStats.map(_.misses) | ||
keyLastLoadedTimeOpt <- cache.entryStats(key) | ||
keyLastLoadedTime <- ZIO.fromOption(keyLastLoadedTimeOpt).map(_.loaded) | ||
_ <- ZIO.debug(s"Number of cache hits: $hits") | ||
_ <- ZIO.debug(s"Number of cache misses: $misses") | ||
_ <- ZIO.debug(s"The last time of getting $key: $keyLastLoadedTime") | ||
_ <- ZIO.debug( | ||
s"Time to get result by $key 3 times: ${endTime - startTime} seconds" | ||
) | ||
} yield () | ||
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} |