-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathNote-Non original_3.html
542 lines (359 loc) · 13.4 KB
/
Note-Non original_3.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
<!doctype html>
<html class="no-js" lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>
Note-Non original - Pumpkinor.io
</title>
<link href="atom.xml" rel="alternate" title="Pumpkinor.io" type="application/atom+xml">
<link rel="stylesheet" href="asset/css/foundation.min.css" />
<link rel="stylesheet" href="asset/css/docs.css" />
<script src="asset/js/vendor/modernizr.js"></script>
<script src="asset/js/vendor/jquery.js"></script>
<script type="text/javascript">
function before_search(){
var searchVal = 'site:pumpkinor.github.io ' + document.getElementById('search_input').value;
document.getElementById('search_q').value = searchVal;
return true;
}
</script>
</head>
<body class="antialiased hide-extras">
<div class="marketing off-canvas-wrap" data-offcanvas>
<div class="inner-wrap">
<nav class="top-bar docs-bar hide-for-small" data-topbar>
<section class="top-bar-section">
<div class="row">
<div style="position: relative;width:100%;"><div style="position: absolute; width:100%;">
<ul id="main-menu" class="left">
<li id=""><a target="_self" href="index.html">Home</a></li>
<li id=""><a target="_self" href="archives.html">Archives</a></li>
<li id=""><a target="_blank" href="about.html">About</a></li>
</ul>
<ul class="right" id="search-wrap">
<li>
<form target="_blank" onsubmit="return before_search();" action="https://google.com/search" method="get">
<input type="hidden" id="search_q" name="q" value="" />
<input tabindex="1" type="search" id="search_input" placeholder="Search"/>
</form>
</li>
</ul>
</div></div>
</div>
</section>
</nav>
<nav class="tab-bar show-for-small">
<a href="javascript:void(0)" class="left-off-canvas-toggle menu-icon">
<span> Pumpkinor.io</span>
</a>
</nav>
<aside class="left-off-canvas-menu">
<ul class="off-canvas-list">
<li><a target="_self" href="index.html">Home</a></li>
<li><a target="_self" href="archives.html">Archives</a></li>
<li><a target="_blank" href="about.html">About</a></li>
<li><label>Categories</label></li>
<li><a href="Note-Non%20original.html">Note-Non original</a></li>
<li><a href="configuration.html">configuration</a></li>
<li><a href="after%20read.html">after read</a></li>
<li><a href="Memo.html">Memo</a></li>
</ul>
</aside>
<a class="exit-off-canvas" href="#"></a>
<section id="main-content" role="main" class="scroll-container">
<script type="text/javascript">
$(function(){
$('#menu_item_index').addClass('is_active');
});
</script>
<div class="row">
<div class="large-8 medium-8 columns">
<div class="markdown-body home-categories">
<div class="article">
<a class="clearlink" href="16355083181390.html">
<h1>生产就绪前要做的工作</h1>
<div class="a-content">
<div class="a-content-text">
<h4><a id="%E6%91%98%E5%BD%95" class="anchor" aria-hidden="true"><span class="octicon octicon-link"></span></a>摘录</h4>
<p>今天，我和你介绍了如何使用 Spring Boot Actuaor 实现生产就绪的几个关键点，包括健康检测、暴露应用信息和指标监控。<br />
所谓磨刀不误砍柴工，健康检测可以帮我们实现负载均衡的联动；应用信息以及 Actuaor 提供的各种端点，可以帮我们查看应用内部情况，甚至对应用的一些参数进行调整；而指标监控，则有助于我们整体观察应用运行情况，帮助我们快速发现和定位问题。<br />
其实，完整的应用监控体系一般由三个方面构成，包括日志 Logging、指标 Metrics 和追踪 Tracing。其中，日志和指标我相信你应该已经比较清楚了。追踪一般不涉及开发工作就没有展开阐述，我和你简单介绍一下。<br />
追踪也叫做全链路追踪，比较有代表性的开源系统是SkyWalking和Pinpoint。一般而言，接入此类系统无需额外开发，使用其提供的 javaagent 来启动 Java 程序，就可以通过动态修改字节码实现各种组件的改写，以加入追踪代码（类似 AOP）。</p>
<p>全链路追踪的原理是：</p>
<ol>
<li>请求进入第一个组件时，先生成一个 TraceID，作为整个调用链（Trace）的唯一标识；</li>
<li>对于每次操作，都记录耗时和相关信息形成一个 Span 挂载到调用链上，Span 和 Span 之间同样可以形成树状关联，出现远程调用、跨系统调用的时候，把 TraceID 进行透传（比如，HTTP 调用通过请求透传，MQ 消息则通过消息透传）；</li>
<li>把这些数据汇总提交到数据库中，通过一个 UI 界面查询整个树状调用链。</li>
</ol>
<p>同时，我们一般会把 TraceID 记录到日志中，方便实现日志和追踪的关联。我用一张图对比了日志、指标和追踪的区别和特点：<br />
<img src="media/16355083181390/16355084552562.jpg" alt="" /></p>
<p>在我看来，完善的监控体系三者缺一不可，它们还可以相互配合，比如通过指标发现性能问题，通过追踪定位性能问题所在的应用和操作，最后通过日志定位出具体请求的明细参数。</p>
</div>
</div>
</a>
<div class="read-more clearfix">
<div class="more-left left">
<span class="date">2021/10/29</span>
<span>posted in </span>
<span class="posted-in"><a href='Java%20Mistake%20100.html'>Java Mistake 100</a></span>
</div>
<div class="more-right right">
<span class="comments">
</span>
</div>
</div>
</div><!-- article -->
<div class="row">
<div class="large-6 columns">
<p class="text-left" style="padding-top:25px;">
<a href="Note-Non original_2.html">« Prev Page</a>
</p>
</div>
<div class="large-6 columns">
<p class="text-right" style="padding-top:25px;">
<a href="Note-Non original_4.html">» Next Page</a>
</p>
</div>
</div>
</div>
</div><!-- large 8 -->
<div class="large-4 medium-4 columns">
<div class="hide-for-small">
<div id="sidebar" class="sidebar">
<div id="site-info" class="site-info">
<h1>Pumpkinor.io</h1>
<div class="site-des"></div>
<div class="social">
<a target="_blank" class="github" target="_blank" href="https://github.com/Pumpkinor" title="GitHub">GitHub</a>
<a target="_blank" class="email" href="mailto:[email protected]" title="Email">Email</a>
<a target="_blank" class="rss" href="atom.xml" title="RSS">RSS</a>
</div>
</div>
<div id="site-categories" class="side-item ">
<div class="side-header">
<h2>Categories</h2>
</div>
<div class="side-content">
<p class="cat-list">
<a href="Note-Non%20original.html"><strong>Note-Non original</strong></a>
<a href="configuration.html"><strong>configuration</strong></a>
<a href="after%20read.html"><strong>after read</strong></a>
<a href="Memo.html"><strong>Memo</strong></a>
</p>
</div>
</div>
<div id="site-categories" class="side-item">
<div class="side-header">
<h2>Recent Posts</h2>
</div>
<div class="side-content">
<ul class="posts-list">
<li class="post">
<a href="16512949593862.html">为什么需要消息队列</a>
</li>
<li class="post">
<a href="16512948238106.html"></a>
</li>
<li class="post">
<a href="16381018403104.html">2021/11/28 算法学习开始</a>
</li>
<li class="post">
<a href="16356092078092.html">异步处理</a>
</li>
<li class="post">
<a href="16355083181390.html">生产就绪前要做的工作</a>
</li>
</ul>
</div>
</div>
</div><!-- sidebar -->
</div><!-- hide for small -->
</div><!-- large 4 -->
</div><!-- row -->
<div class="page-bottom clearfix">
<div class="row">
<p class="copyright">Copyright © 2015
Powered by <a target="_blank" href="http://www.mweb.im">MWeb</a>,
Theme used <a target="_blank" href="http://github.com">GitHub CSS</a>.</p>
</div>
</div>
</section>
</div>
</div>
<style type="text/css">
figure{margin: 0;padding: 0;}
figcaption{text-align:center;}
/* PrismJS 1.14.0
http://prismjs.com/download.html#themes=prism&languages=markup+css+clike+javascript */
/**
* prism.js default theme for JavaScript, CSS and HTML
* Based on dabblet (http://dabblet.com)
* @author Lea Verou
*/
code[class*="language-"],
pre[class*="language-"] {
color: black;
background: none;
text-shadow: 0 1px white;
font-family: Consolas, Monaco, 'Andale Mono', 'Ubuntu Mono', monospace;
text-align: left;
white-space: pre;
word-spacing: normal;
word-break: normal;
word-wrap: normal;
line-height: 1.5;
-moz-tab-size: 4;
-o-tab-size: 4;
tab-size: 4;
-webkit-hyphens: none;
-moz-hyphens: none;
-ms-hyphens: none;
hyphens: none;
}
pre[class*="language-"]::-moz-selection, pre[class*="language-"] ::-moz-selection,
code[class*="language-"]::-moz-selection, code[class*="language-"] ::-moz-selection {
text-shadow: none;
background:#b3d4fc;
}
pre[class*="language-"]::selection, pre[class*="language-"] ::selection,
code[class*="language-"]::selection, code[class*="language-"] ::selection {
text-shadow: none;
background: #b3d4fc;
}
@media print {
code[class*="language-"],
pre[class*="language-"] {
text-shadow: none;
}
}
/* Code blocks */
pre[class*="language-"] {
padding: 1em;
margin: .5em 0;
overflow: auto;
}
:not(pre) > code[class*="language-"],
pre[class*="language-"] {
background: #F7F7F7;
}
/* Inline code */
:not(pre) > code[class*="language-"] {
padding: .1em;
border-radius: .3em;
white-space: normal;
}
.token.comment,
.token.prolog,
.token.doctype,
.token.cdata {
color: slategray;
}
.token.punctuation {
color: #999;
}
.namespace {
opacity: .7;
}
.token.property,
.token.tag,
.token.boolean,
.token.number,
.token.constant,
.token.symbol,
.token.deleted {
color: #905;
}
.token.selector,
.token.attr-name,
.token.string,
.token.char,
.token.builtin,
.token.inserted {
color: #690;
}
.token.operator,
.token.entity,
.token.url,
.language-css .token.string,
.style .token.string {
color: #9a6e3a;
background: hsla(0, 0%, 100%, .5);
}
.token.atrule,
.token.attr-value,
.token.keyword {
color: #07a;
}
.token.function,
.token.class-name {
color: #DD4A68;
}
.token.regex,
.token.important,
.token.variable {
color: #e90;
}
.token.important,
.token.bold {
font-weight: bold;
}
.token.italic {
font-style: italic;
}
.token.entity {
cursor: help;
}
pre[class*="language-"].line-numbers {
position: relative;
padding-left: 3.8em;
counter-reset: linenumber;
}
pre[class*="language-"].line-numbers > code {
position: relative;
white-space: inherit;
}
.line-numbers .line-numbers-rows {
position: absolute;
pointer-events: none;
top: 0;
font-size: 100%;
left: -3.8em;
width: 3em; /* works for line-numbers below 1000 lines */
letter-spacing: -1px;
border-right: 1px solid #999;
-webkit-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
user-select: none;
}
.line-numbers-rows > span {
pointer-events: none;
display: block;
counter-increment: linenumber;
}
.line-numbers-rows > span:before {
content: counter(linenumber);
color: #999;
display: block;
padding-right: 0.8em;
text-align: right;
}
</style>
<script src="asset/js/foundation.min.js"></script>
<script>
$(document).foundation();
function fixSidebarHeight(){
var w1 = $('.markdown-body').height();
var w2 = $('#sidebar').height();
if (w1 > w2) { $('#sidebar').height(w1); };
}
$(function(){
fixSidebarHeight();
})
$(window).load(function(){
fixSidebarHeight();
});
</script>
</body>
</html>