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optimise. #1

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67f1dd7
optimise.
iTriumph Oct 11, 2018
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optimise.
iTriumph Oct 11, 2018
9518346
optimise.
iTriumph Oct 12, 2018
4cff78a
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iTriumph Oct 12, 2018
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1 change: 0 additions & 1 deletion CNAME
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1 change: 0 additions & 1 deletion _config.yml
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13 changes: 12 additions & 1 deletion docs/SnowflakeTutorial_zh_CN.md
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Original file line number Diff line number Diff line change
Expand Up @@ -89,7 +89,18 @@ for (int i = 0; i < 20; i++) {
2017-09-15 17:35:04.894, #1, @(2,5) => id: 225912364284006401, hex: 03229A192F845001, bin: 0000001100100010100110100001100100101111100001000101000000000001
```

从输出结果看出，由于``System.out.println``IO操作比较耗时，导致前后两次生成ID的时间间隔偶尔会超过1毫秒。超过1毫秒的，序号字段会是``#0``；没超过1毫秒的，序号字段会累加。
从输出结果看出，由于``System.out.println``IO操作比较耗时，导致前后两次生成ID的时间间隔偶尔会超过1毫秒。超过1毫秒的，序号字段会是``#0``；没超过1毫秒的，序号字段会累加。对应如下源码:
```java
/**
* the unique and incrementing sequence number scoped in only one
* period/unit (here is ONE millisecond). its value will be increased by 1
* in the same specified period and then reset to 0 for next period.
* <p>
* max: 2^12-1 range: [0,4095]
*/
private long sequence = 0L;
```


### 源代码解析

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138 changes: 44 additions & 94 deletions pom.xml
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Expand Up @@ -2,11 +2,12 @@
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>

<groupId>xyz.downgoon</groupId>
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groupId changed ?

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人才

<groupId>com.moonsinfo</groupId>
<artifactId>snowflake</artifactId>
<version>1.0.0-SNAPSHOT</version>
<version>1.1</version>
<packaging>jar</packaging>

<name>snowflake</name>
<description>java edition of Twitter Snowflake: a network service for generating unique ID numbers at high scale with some simple guarantees</description>
<url>http://snowflake.downgoon.xyz/</url>
<licenses>
Expand All @@ -17,154 +18,77 @@
</license>
</licenses>

<scm>
<connection>scm:git:[email protected]:downgoon/snowflake.git</connection>
<developerConnection>scm:git:[email protected]:downgoon/snowflake.git</developerConnection>
<url>http://github.com/downgoon/snowflake</url>
</scm>

<developers>
<developer>
<id>downgoon</id>
<name>downgoon</name>
<email>[email protected]</email>
</developer>
</developers>

<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>

<dependencies>

<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.4</version>
<scope>test</scope>
</dependency>

</dependencies>

<!-- deploy to remote (uploader password stored in settings.xml) -->

<profiles>

<profile>
<id>ossrh</id>
<activation>
<activeByDefault>true</activeByDefault>
</activation>
<distributionManagement>
<snapshotRepository>
<id>ossrh</id>
<name>Central Public Snapshots</name>
<url>https://oss.sonatype.org/content/repositories/snapshots</url>
</snapshotRepository>
<repository>
<id>ossrh</id>
<name>Central Public Releases</name>
<url>https://oss.sonatype.org/service/local/staging/deploy/maven2</url>
</repository>
</distributionManagement>
</profile>

<profile>
<id>mysite</id>
<activation>
<activeByDefault>false</activeByDefault>
</activation>
<distributionManagement>
<snapshotRepository>
<id>mysiterh</id>
<name>Nexus Snapshot Repository</name>
<url>http://maven.intra.mysite.com/nexus/content/repositories/snapshots/</url>
</snapshotRepository>
<repository>
<id>mysiterh</id>
<name>Nexus Release Repository</name>
<url>http://maven.intra.mysite.com/nexus/content/repositories/releases/</url>
</repository>
</distributionManagement>
</profile>

</profiles>


<build>
<plugins>
<!-- Compile -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.3.2</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
<encoding>${project.build.sourceEncoding}</encoding>
<showDeprecation>true</showDeprecation>
<showWarnings>true</showWarnings>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>

<!-- Download sources and javadocs for eclipse -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-eclipse-plugin</artifactId>
<version>2.9</version>
<configuration>
<downloadSources>true</downloadSources>
<downloadJavadocs>true</downloadJavadocs>
</configuration>
</plugin>

<!-- deploy uploading: source, document and sign of jar -->

<!-- source -->
<!-- Source -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-source-plugin</artifactId>
<version>2.2.1</version>
<executions>
<execution>
<id>attach-sources</id>
<phase>package</phase>
<goals>
<goal>jar-no-fork</goal>
</goals>
</execution>
</executions>
</plugin>

<!-- javadoc -->
<!-- Javadoc -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-javadoc-plugin</artifactId>
<version>2.9.1</version>
<version>2.10.4</version>
<executions>
<execution>
<id>attach-javadocs</id>
<phase>package</phase>
<goals>
<goal>jar</goal>
</goals>
</execution>
</executions>
<configuration>
<charset>UTF-8</charset>
<encoding>UTF-8</encoding>
<docencoding>UTF-8</docencoding>
<additionalparam>-Xdoclint:none</additionalparam>
</configuration>
</plugin>

<!-- sign of jar -->
<!-- GPG -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-gpg-plugin</artifactId>
<version>1.5</version>
<executions>
<execution>
<id>sign-artifacts</id>
<phase>verify</phase>
<goals>
<goal>sign</goal>
</goals>
</execution>
</executions>
</plugin>

<!-- skip some test -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
Expand All @@ -183,4 +107,30 @@
</plugins>
</build>


<developers>
<developer>
<name>Ethan Yao</name>
<url>http://www.moonsinfo.com</url>
<email>[email protected]</email>
</developer>
</developers>

<scm>
<connection>scm:git:[email protected]:iTriumph/snowflake.git</connection>
<developerConnection>scm:git:[email protected]:iTriumph/snowflake.git</developerConnection>
<url>http://github.com/iTriumph/snowflake</url>
</scm>

<distributionManagement>
<repository>
<id>ossrh</id>
<url>https://oss.sonatype.org/service/local/staging/deploy/maven2</url>
</repository>
<snapshotRepository>
<id>ossrh</id>
<url>https://oss.sonatype.org/content/repositories/snapshots</url>
</snapshotRepository>
</distributionManagement>

</project>