Beetl性能再次测试

Stella981
• 阅读 539

在某个“新模板引擎”的基准测试增加Beetl，测试结果如下，可以看到Beetl还是很领先，每秒渲染80685次（我的机器是Mac Pro，Core I7)

Benchmark              Mode  Cnt      Score      Error  Units
Beetl.benchmark       thrpt   10  80685.217 ± 3056.314  ops/s
Enjoy.benchmark       thrpt   10  71429.555 ±  626.639  ops/s
Freemarker.benchmark  thrpt   10  22262.620 ±  917.084  ops/s
Handlebars.benchmark  thrpt   10  23077.234 ±  271.438  ops/s
Mustache.benchmark    thrpt   10  25899.922 ±  235.957  ops/s
Pebble.benchmark      thrpt   10  43756.295 ± 1816.826  ops/s
Rocker.benchmark      thrpt   10  49089.556 ±  693.635  ops/s
Thymeleaf.benchmark   thrpt   10   6998.717 ±  160.461  ops/s
Trimou.benchmark      thrpt   10  28561.924 ±  759.969  ops/s
Velocity.benchmark    thrpt   10  25087.417 ±  251.709  ops/s

最糟糕的依然是Thymeleaf，每秒渲染6998次。Beetl性能是它的12倍

Beetl很长时间没有在考虑性能优化方面的再升级了，这方面技术都是在大约5年前的技术，这些性能技术积累更来自于10年前，我还还写了一本书《Java系统性能优化实战》，把这些经验以及国外性能优秀工具的优化经验都通过代码说出来了

Beetl3升级主要方向还是朝着如何更方便用户使用和二次开发，比如不仅仅支持自定义定界符和占位符，还支持再定义一对。比如，支持很方便的重写语法树从而支持用户想要的特性等等。Beetl3已经朝着平台化发展，希望有人一想到模板设计模式，就能想到用Beetl完成。

如下是日志输出,如果你想读懂，你也可以购买我的书学习看看Java性能怎么玩

>java -jar target/benchmarks.jar 
# JMH 1.11.2 (released 1512 days ago, please consider updating!)
# VM version: JDK 1.8.0_231, VM 25.231-b11
# VM invoker: /Library/Java/JavaVirtualMachines/jdk1.8.0_231.jdk/Contents/Home/jre/bin/java
# VM options: <none>
# Warmup: 7 iterations, 1 s each
# Measurement: 10 iterations, 1 s each
# Timeout: 10 min per iteration
# Threads: 1 thread, will synchronize iterations
# Benchmark mode: Throughput, ops/time
# Benchmark: com.mitchellbosecke.benchmark.Beetl.benchmark

# Run progress: 0.00% complete, ETA 00:02:50
# Fork: 1 of 1
# Warmup Iteration   1: 51114.962 ops/s
# Warmup Iteration   2: 68838.051 ops/s
# Warmup Iteration   3: 80548.756 ops/s
# Warmup Iteration   4: 80455.776 ops/s
# Warmup Iteration   5: 82575.140 ops/s
# Warmup Iteration   6: 81991.678 ops/s
# Warmup Iteration   7: 81266.783 ops/s
Iteration   1: 82013.802 ops/s
Iteration   2: 82541.466 ops/s
Iteration   3: 80045.919 ops/s
Iteration   4: 79674.899 ops/s
Iteration   5: 78000.984 ops/s
Iteration   6: 76781.741 ops/s
Iteration   7: 82078.755 ops/s
Iteration   8: 81180.128 ops/s
Iteration   9: 81764.501 ops/s
Iteration  10: 82769.974 ops/s


Result "benchmark":
  80685.217 ±(99.9%) 3056.314 ops/s [Average]
  (min, avg, max) = (76781.741, 80685.217, 82769.974), stdev = 2021.562
  CI (99.9%): [77628.903, 83741.531] (assumes normal distribution)


# JMH 1.11.2 (released 1512 days ago, please consider updating!)
# VM version: JDK 1.8.0_231, VM 25.231-b11
# VM invoker: /Library/Java/JavaVirtualMachines/jdk1.8.0_231.jdk/Contents/Home/jre/bin/java
# VM options: <none>
# Warmup: 7 iterations, 1 s each
# Measurement: 10 iterations, 1 s each
# Timeout: 10 min per iteration
# Threads: 1 thread, will synchronize iterations
# Benchmark mode: Throughput, ops/time
# Benchmark: com.mitchellbosecke.benchmark.Enjoy.benchmark

# Run progress: 10.00% complete, ETA 00:02:37
# Fork: 1 of 1
# Warmup Iteration   1: 31215.408 ops/s
# Warmup Iteration   2: 63274.067 ops/s
# Warmup Iteration   3: 59576.189 ops/s
# Warmup Iteration   4: 56251.571 ops/s
# Warmup Iteration   5: 67626.645 ops/s
# Warmup Iteration   6: 72074.793 ops/s
# Warmup Iteration   7: 71176.183 ops/s
Iteration   1: 70670.965 ops/s
Iteration   2: 71391.061 ops/s
Iteration   3: 71672.155 ops/s
Iteration   4: 70904.271 ops/s
Iteration   5: 71651.906 ops/s
Iteration   6: 71427.132 ops/s
Iteration   7: 71661.251 ops/s
Iteration   8: 72070.550 ops/s
Iteration   9: 71668.440 ops/s
Iteration  10: 71177.815 ops/s


Result "benchmark":
  71429.555 ±(99.9%) 626.639 ops/s [Average]
  (min, avg, max) = (70670.965, 71429.555, 72070.550), stdev = 414.483
  CI (99.9%): [70802.916, 72056.193] (assumes normal distribution)


# JMH 1.11.2 (released 1512 days ago, please consider updating!)
# VM version: JDK 1.8.0_231, VM 25.231-b11
# VM invoker: /Library/Java/JavaVirtualMachines/jdk1.8.0_231.jdk/Contents/Home/jre/bin/java
# VM options: <none>
# Warmup: 7 iterations, 1 s each
# Measurement: 10 iterations, 1 s each
# Timeout: 10 min per iteration
# Threads: 1 thread, will synchronize iterations
# Benchmark mode: Throughput, ops/time
# Benchmark: com.mitchellbosecke.benchmark.Freemarker.benchmark

# Run progress: 20.00% complete, ETA 00:02:20
# Fork: 1 of 1
# Warmup Iteration   1: 12350.845 ops/s
# Warmup Iteration   2: 15622.818 ops/s
# Warmup Iteration   3: 15704.254 ops/s
# Warmup Iteration   4: 17695.744 ops/s
# Warmup Iteration   5: 23147.720 ops/s
# Warmup Iteration   6: 22273.775 ops/s
# Warmup Iteration   7: 21119.996 ops/s
Iteration   1: 22007.723 ops/s
Iteration   2: 23134.424 ops/s
Iteration   3: 22243.061 ops/s
Iteration   4: 22795.193 ops/s
Iteration   5: 23060.673 ops/s
Iteration   6: 22321.961 ops/s
Iteration   7: 21464.161 ops/s
Iteration   8: 22397.418 ops/s
Iteration   9: 21724.151 ops/s
Iteration  10: 21477.439 ops/s


Result "benchmark":
  22262.620 ±(99.9%) 917.084 ops/s [Average]
  (min, avg, max) = (21464.161, 22262.620, 23134.424), stdev = 606.594
  CI (99.9%): [21345.537, 23179.704] (assumes normal distribution)


# JMH 1.11.2 (released 1512 days ago, please consider updating!)
# VM version: JDK 1.8.0_231, VM 25.231-b11
# VM invoker: /Library/Java/JavaVirtualMachines/jdk1.8.0_231.jdk/Contents/Home/jre/bin/java
# VM options: <none>
# Warmup: 7 iterations, 1 s each
# Measurement: 10 iterations, 1 s each
# Timeout: 10 min per iteration
# Threads: 1 thread, will synchronize iterations
# Benchmark mode: Throughput, ops/time
# Benchmark: com.mitchellbosecke.benchmark.Handlebars.benchmark

# Run progress: 30.00% complete, ETA 00:02:02
# Fork: 1 of 1
# Warmup Iteration   1: SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
ANTLR Tool version 4.5.1 used for code generation does not match the current runtime version 4.7.2ANTLR Runtime version 4.5.1 used for parser compilation does not match the current runtime version 4.7.2ANTLR Tool version 4.5.1 used for code generation does not match the current runtime version 4.7.2ANTLR Runtime version 4.5.1 used for parser compilation does not match the current runtime version 4.7.213789.253 ops/s
# Warmup Iteration   2: 18012.201 ops/s
# Warmup Iteration   3: 22485.044 ops/s
# Warmup Iteration   4: 23362.141 ops/s
# Warmup Iteration   5: 23085.279 ops/s
# Warmup Iteration   6: 23253.656 ops/s
# Warmup Iteration   7: 23129.963 ops/s
Iteration   1: 23038.476 ops/s
Iteration   2: 23235.933 ops/s
Iteration   3: 23323.908 ops/s
Iteration   4: 23188.352 ops/s
Iteration   5: 22849.885 ops/s
Iteration   6: 23006.736 ops/s
Iteration   7: 22738.257 ops/s
Iteration   8: 23144.517 ops/s
Iteration   9: 23052.706 ops/s
Iteration  10: 23193.571 ops/s


Result "benchmark":
  23077.234 ±(99.9%) 271.438 ops/s [Average]
  (min, avg, max) = (22738.257, 23077.234, 23323.908), stdev = 179.539
  CI (99.9%): [22805.797, 23348.672] (assumes normal distribution)


# JMH 1.11.2 (released 1512 days ago, please consider updating!)
# VM version: JDK 1.8.0_231, VM 25.231-b11
# VM invoker: /Library/Java/JavaVirtualMachines/jdk1.8.0_231.jdk/Contents/Home/jre/bin/java
# VM options: <none>
# Warmup: 7 iterations, 1 s each
# Measurement: 10 iterations, 1 s each
# Timeout: 10 min per iteration
# Threads: 1 thread, will synchronize iterations
# Benchmark mode: Throughput, ops/time
# Benchmark: com.mitchellbosecke.benchmark.Mustache.benchmark

# Run progress: 40.00% complete, ETA 00:01:45
# Fork: 1 of 1
# Warmup Iteration   1: 17535.313 ops/s
# Warmup Iteration   2: 23993.906 ops/s
# Warmup Iteration   3: 23758.839 ops/s
# Warmup Iteration   4: 24852.563 ops/s
# Warmup Iteration   5: 26130.397 ops/s
# Warmup Iteration   6: 25813.815 ops/s
# Warmup Iteration   7: 25822.804 ops/s
Iteration   1: 25829.128 ops/s
Iteration   2: 25648.836 ops/s
Iteration   3: 25852.150 ops/s
Iteration   4: 26042.862 ops/s
Iteration   5: 26025.606 ops/s
Iteration   6: 25801.628 ops/s
Iteration   7: 25815.660 ops/s
Iteration   8: 25960.610 ops/s
Iteration   9: 25827.831 ops/s
Iteration  10: 26194.905 ops/s


Result "benchmark":
  25899.922 ±(99.9%) 235.957 ops/s [Average]
  (min, avg, max) = (25648.836, 25899.922, 26194.905), stdev = 156.071
  CI (99.9%): [25663.965, 26135.879] (assumes normal distribution)


# JMH 1.11.2 (released 1512 days ago, please consider updating!)
# VM version: JDK 1.8.0_231, VM 25.231-b11
# VM invoker: /Library/Java/JavaVirtualMachines/jdk1.8.0_231.jdk/Contents/Home/jre/bin/java
# VM options: <none>
# Warmup: 7 iterations, 1 s each
# Measurement: 10 iterations, 1 s each
# Timeout: 10 min per iteration
# Threads: 1 thread, will synchronize iterations
# Benchmark mode: Throughput, ops/time
# Benchmark: com.mitchellbosecke.benchmark.Pebble.benchmark

# Run progress: 50.00% complete, ETA 00:01:27
# Fork: 1 of 1
# Warmup Iteration   1: SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
27168.276 ops/s
# Warmup Iteration   2: 32613.551 ops/s
# Warmup Iteration   3: 38244.156 ops/s
# Warmup Iteration   4: 39785.774 ops/s
# Warmup Iteration   5: 44299.959 ops/s
# Warmup Iteration   6: 44434.804 ops/s
# Warmup Iteration   7: 44571.050 ops/s
Iteration   1: 44247.614 ops/s
Iteration   2: 44247.773 ops/s
Iteration   3: 43517.520 ops/s
Iteration   4: 43722.531 ops/s
Iteration   5: 43991.663 ops/s
Iteration   6: 44506.856 ops/s
Iteration   7: 44459.715 ops/s
Iteration   8: 40458.385 ops/s
Iteration   9: 44028.232 ops/s
Iteration  10: 44382.664 ops/s


Result "benchmark":
  43756.295 ±(99.9%) 1816.826 ops/s [Average]
  (min, avg, max) = (40458.385, 43756.295, 44506.856), stdev = 1201.718
  CI (99.9%): [41939.469, 45573.121] (assumes normal distribution)


# JMH 1.11.2 (released 1512 days ago, please consider updating!)
# VM version: JDK 1.8.0_231, VM 25.231-b11
# VM invoker: /Library/Java/JavaVirtualMachines/jdk1.8.0_231.jdk/Contents/Home/jre/bin/java
# VM options: <none>
# Warmup: 7 iterations, 1 s each
# Measurement: 10 iterations, 1 s each
# Timeout: 10 min per iteration
# Threads: 1 thread, will synchronize iterations
# Benchmark mode: Throughput, ops/time
# Benchmark: com.mitchellbosecke.benchmark.Rocker.benchmark

# Run progress: 60.00% complete, ETA 00:01:10
# Fork: 1 of 1
# Warmup Iteration   1: SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
33854.778 ops/s
# Warmup Iteration   2: 42459.314 ops/s
# Warmup Iteration   3: 48707.841 ops/s
# Warmup Iteration   4: 49277.922 ops/s
# Warmup Iteration   5: 49129.981 ops/s
# Warmup Iteration   6: 49509.122 ops/s
# Warmup Iteration   7: 49198.592 ops/s
Iteration   1: 49195.148 ops/s
Iteration   2: 49632.069 ops/s
Iteration   3: 48999.080 ops/s
Iteration   4: 49195.088 ops/s
Iteration   5: 49243.290 ops/s
Iteration   6: 47891.038 ops/s
Iteration   7: 49088.378 ops/s
Iteration   8: 49020.226 ops/s
Iteration   9: 49279.872 ops/s
Iteration  10: 49351.368 ops/s


Result "benchmark":
  49089.556 ±(99.9%) 693.635 ops/s [Average]
  (min, avg, max) = (47891.038, 49089.556, 49632.069), stdev = 458.796
  CI (99.9%): [48395.921, 49783.190] (assumes normal distribution)


# JMH 1.11.2 (released 1512 days ago, please consider updating!)
# VM version: JDK 1.8.0_231, VM 25.231-b11
# VM invoker: /Library/Java/JavaVirtualMachines/jdk1.8.0_231.jdk/Contents/Home/jre/bin/java
# VM options: <none>
# Warmup: 7 iterations, 1 s each
# Measurement: 10 iterations, 1 s each
# Timeout: 10 min per iteration
# Threads: 1 thread, will synchronize iterations
# Benchmark mode: Throughput, ops/time
# Benchmark: com.mitchellbosecke.benchmark.Thymeleaf.benchmark

# Run progress: 70.00% complete, ETA 00:00:52
# Fork: 1 of 1
# Warmup Iteration   1: SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
2057.178 ops/s
# Warmup Iteration   2: 5408.899 ops/s
# Warmup Iteration   3: 5059.918 ops/s
# Warmup Iteration   4: 6139.924 ops/s
# Warmup Iteration   5: 7035.402 ops/s
# Warmup Iteration   6: 7094.740 ops/s
# Warmup Iteration   7: 7084.667 ops/s
Iteration   1: 7018.652 ops/s
Iteration   2: 7001.913 ops/s
Iteration   3: 6795.352 ops/s
Iteration   4: 7080.256 ops/s
Iteration   5: 7101.143 ops/s
Iteration   6: 6964.797 ops/s
Iteration   7: 7076.073 ops/s
Iteration   8: 7052.836 ops/s
Iteration   9: 7064.871 ops/s
Iteration  10: 6831.275 ops/s


Result "benchmark":
  6998.717 ±(99.9%) 160.461 ops/s [Average]
  (min, avg, max) = (6795.352, 6998.717, 7101.143), stdev = 106.135
  CI (99.9%): [6838.256, 7159.177] (assumes normal distribution)


# JMH 1.11.2 (released 1512 days ago, please consider updating!)
# VM version: JDK 1.8.0_231, VM 25.231-b11
# VM invoker: /Library/Java/JavaVirtualMachines/jdk1.8.0_231.jdk/Contents/Home/jre/bin/java
# VM options: <none>
# Warmup: 7 iterations, 1 s each
# Measurement: 10 iterations, 1 s each
# Timeout: 10 min per iteration
# Threads: 1 thread, will synchronize iterations
# Benchmark mode: Throughput, ops/time
# Benchmark: com.mitchellbosecke.benchmark.Trimou.benchmark

# Run progress: 80.00% complete, ETA 00:00:34
# Fork: 1 of 1
# Warmup Iteration   1: SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
20176.562 ops/s
# Warmup Iteration   2: 25219.391 ops/s
# Warmup Iteration   3: 28882.489 ops/s
# Warmup Iteration   4: 28674.271 ops/s
# Warmup Iteration   5: 28947.661 ops/s
# Warmup Iteration   6: 28699.878 ops/s
# Warmup Iteration   7: 29350.914 ops/s
Iteration   1: 29148.581 ops/s
Iteration   2: 28822.351 ops/s
Iteration   3: 28565.120 ops/s
Iteration   4: 27519.283 ops/s
Iteration   5: 28694.823 ops/s
Iteration   6: 28006.620 ops/s
Iteration   7: 28561.401 ops/s
Iteration   8: 28722.204 ops/s
Iteration   9: 28389.563 ops/s
Iteration  10: 29189.294 ops/s


Result "benchmark":
  28561.924 ±(99.9%) 759.969 ops/s [Average]
  (min, avg, max) = (27519.283, 28561.924, 29189.294), stdev = 502.672
  CI (99.9%): [27801.955, 29321.893] (assumes normal distribution)


# JMH 1.11.2 (released 1512 days ago, please consider updating!)
# VM version: JDK 1.8.0_231, VM 25.231-b11
# VM invoker: /Library/Java/JavaVirtualMachines/jdk1.8.0_231.jdk/Contents/Home/jre/bin/java
# VM options: <none>
# Warmup: 7 iterations, 1 s each
# Measurement: 10 iterations, 1 s each
# Timeout: 10 min per iteration
# Threads: 1 thread, will synchronize iterations
# Benchmark mode: Throughput, ops/time
# Benchmark: com.mitchellbosecke.benchmark.Velocity.benchmark

# Run progress: 90.00% complete, ETA 00:00:17
# Fork: 1 of 1
# Warmup Iteration   1: 17798.011 ops/s
# Warmup Iteration   2: 19231.510 ops/s
# Warmup Iteration   3: 21294.027 ops/s
# Warmup Iteration   4: 22293.956 ops/s
# Warmup Iteration   5: 24805.921 ops/s
# Warmup Iteration   6: 24786.870 ops/s
# Warmup Iteration   7: 25496.960 ops/s
Iteration   1: 25338.231 ops/s
Iteration   2: 25153.088 ops/s
Iteration   3: 25256.198 ops/s
Iteration   4: 25246.344 ops/s
Iteration   5: 25063.117 ops/s
Iteration   6: 24941.525 ops/s
Iteration   7: 24951.636 ops/s
Iteration   8: 25156.106 ops/s
Iteration   9: 24865.445 ops/s
Iteration  10: 24902.477 ops/s


Result "benchmark":
  25087.417 ±(99.9%) 251.709 ops/s [Average]
  (min, avg, max) = (24865.445, 25087.417, 25338.231), stdev = 166.490
  CI (99.9%): [24835.708, 25339.125] (assumes normal distribution)


# Run complete. Total time: 00:02:55

Benchmark              Mode  Cnt      Score      Error  Units
Beetl.benchmark       thrpt   10  80685.217 ± 3056.314  ops/s
Enjoy.benchmark       thrpt   10  71429.555 ±  626.639  ops/s
Freemarker.benchmark  thrpt   10  22262.620 ±  917.084  ops/s
Handlebars.benchmark  thrpt   10  23077.234 ±  271.438  ops/s
Mustache.benchmark    thrpt   10  25899.922 ±  235.957  ops/s
Pebble.benchmark      thrpt   10  43756.295 ± 1816.826  ops/s
Rocker.benchmark      thrpt   10  49089.556 ±  693.635  ops/s
Thymeleaf.benchmark   thrpt   10   6998.717 ±  160.461  ops/s
Trimou.benchmark      thrpt   10  28561.924 ±  759.969  ops/s
Velocity.benchmark    thrpt   10  25087.417 ±  251.709  ops/s
daysforkjdkeachiteration虚拟机前端前端
点赞
收藏
评论区
推荐文章
blmius blmius
•
2年前
MySQL:[Err] 1292 - Incorrect datetime value: ‘0000-00-00 00:00:00‘ for column ‘CREATE_TIME‘ at row 1
文章目录问题用navicat导入数据时，报错：原因这是因为当前的MySQL不支持datetime为0的情况。解决修改sql\mode:sql\mode:SQLMode定义了MySQL应支持的SQL语法、数据校验等，这样可以更容易地在不同的环境中使用MySQL。全局s
3529
0
0
Jacquelyn38 Jacquelyn38
•
2年前
2020年前端实用代码段，为你的工作保驾护航
有空的时候，自己总结了几个代码段，在开发中也经常使用，谢谢。1、使用解构获取json数据let jsonData  id: 1,status: "OK",data: 'a', 'b';let  id, status, data: number   jsonData;console.log(id, status, number )
2006
0
0
helloworld_34035044 helloworld_34035044
•
1年前
皕杰报表之UUID
​在我们用皕杰报表工具设计填报报表时，如何在新增行里自动增加id呢？能新增整数排序id吗？目前可以在新增行里自动增加id，但只能用uuid函数增加UUID编码，不能新增整数排序id。uuid函数说明：获取一个UUID，可以在填报表中用来创建数据ID语法：uuid()或uuid(sep)参数说明：sep布尔值，生成的uuid中是否包含分隔符''，缺省为
792
0
0
Stella981 Stella981
•
2年前
KVM调整cpu和内存
一.修改kvm虚拟机的配置1、virsheditcentos7找到“memory”和“vcpu”标签，将<namecentos7</name<uuid2220a6d1a36a4fbb8523e078b3dfe795</uuid
1051
0
0
Easter79 Easter79
•
2年前
Twitter的分布式自增ID算法snowflake (Java版)
概述分布式系统中，有一些需要使用全局唯一ID的场景，这种时候为了防止ID冲突可以使用36位的UUID，但是UUID有一些缺点，首先他相对比较长，另外UUID一般是无序的。有些时候我们希望能使用一种简单一些的ID，并且希望ID能够按照时间有序生成。而twitter的snowflake解决了这种需求，最初Twitter把存储系统从MySQL迁移
880
0
0
Wesley13 Wesley13
•
2年前
mysql设置时区
mysql设置时区mysql\_query("SETtime\_zone'8:00'")ordie('时区设置失败，请联系管理员！');中国在东8区所以加8方法二：selectcount(user\_id)asdevice,CONVERT\_TZ(FROM\_UNIXTIME(reg\_time),'08:00','0
934
0
0
Wesley13 Wesley13
•
2年前
00：Java简单了解
浅谈Java之概述Java是SUN(StanfordUniversityNetwork)，斯坦福大学网络公司)1995年推出的一门高级编程语言。Java是一种面向Internet的编程语言。随着Java技术在web方面的不断成熟，已经成为Web应用程序的首选开发语言。Java是简单易学，完全面向对象，安全可靠，与平台无关的编程语言。
923
0
0
Stella981 Stella981
•
2年前
Django中Admin中的一些参数配置
设置在列表中显示的字段，id为django模型默认的主键list_display('id','name','sex','profession','email','qq','phone','status','create_time')设置在列表可编辑字段list_editable
863
0
0
Wesley13 Wesley13
•
2年前
MySQL部分从库上面因为大量的临时表tmp_table造成慢查询
背景描述Time:20190124T00:08:14.70572408:00User@Host:@Id:Schema:sentrymetaLast_errno:0Killed:0Query_time:0.315758Lock_
1129
0
0
Python进阶者 Python进阶者
•
3个月前
Excel中这日期老是出来00：00：00，怎么用Pandas把这个去除
大家好，我是皮皮。一、前言前几天在Python白银交流群【上海新年人】问了一个Pandas数据筛选的问题。问题如下：这日期老是出来00：00：00，怎么把这个去除。二、实现过程后来【论草莓如何成为冻干莓】给了一个思路和代码如下：pd.toexcel之前把这
142
0
0
Stella981
Stella981
Lv1
接天莲叶无穷碧，映日荷花别样红。
文章
1.7w
粉丝
37
获赞
28
热门文章
OpenVPN下载、安装、配置及使用详解
GitHub神器，一个可以白嫖全网无损音乐的神器
OpenWrt 路由器过滤广告的N种方法
Python—执行系统命令的四种方法（os.system、os.popen、commands、subprocess）
SS端加密以及obfs混淆