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301 Moved Permanently - ddiwu.com
HTTP Status: 301
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; [email protected])
Connection: keep-alive
Content-Length: 162
Server: GitHub.com
Content-Type: text/html
Location: https://ddiwu.com/
X-GitHub-Request-Id: 4349:22B6A0:3D7AC5:3DFBFD:68235C88
Accept-Ranges: bytes
Age: 0
Date: Tue, 13 May 2025 14:51:52 GMT
Via: 1.1 varnish
X-Served-By: cache-hel1410022-HEL
X-Cache: MISS
X-Cache-Hits: 0
X-Timer: S1747147913.604295,VS0,VE120
Vary: Accept-Encoding
X-Fastly-Request-ID: 7cd80b508032c31304cb6cdced26f6e87e04d021

HTTP Code 301 Moved Permanently

301 status code means that the requested resource has been permanently moved to a new URL. All future requests should use the new address.

When is Code 301 used?

  • When changing a website domain
  • When modifying URL structures
  • When setting up redirects for SEO

What does Code 301 mean for the user?

The browser will automatically redirect the user to the new address, and search engines will update their indexes.

200 OK - https://ddiwu.com/
HTTP Status: 200
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; [email protected])
Connection: keep-alive
Content-Length: 21806
Server: GitHub.com
Content-Type: text/html; charset=utf-8
Last-Modified: Wed, 19 Feb 2025 10:35:16 GMT
Access-Control-Allow-Origin: *
Strict-Transport-Security: max-age=31556952
ETag: "67b5b3e4-552e"
expires: Tue, 13 May 2025 15:01:53 GMT
Cache-Control: max-age=600
x-proxy-cache: MISS
X-GitHub-Request-Id: CBBA:5EDFB:3D0392:3D8479:68235C88
Accept-Ranges: bytes
Age: 0
Date: Tue, 13 May 2025 14:51:53 GMT
Via: 1.1 varnish
X-Served-By: cache-hel1410026-HEL
X-Cache: MISS
X-Cache-Hits: 0
X-Timer: S1747147913.138395,VS0,VE151
Vary: Accept-Encoding
X-Fastly-Request-ID: 573006c1847441e02d4a1c676baa03df0a38ce94

HTTP Code 200 OK

200 status code is a standard successful HTTP server response. It means that the client’s request (e.g., from a browser) was successfully processed, and the server is delivering the requested data.

When is Code 200 used?

  • When loading a web page
  • When successfully receiving an API response
  • When processing a form or another HTTP request

What does Code 200 mean for the user?

The user receives content without errors, and the page or application functions properly. If Code 200 is accompanied by data, the browser or program processes and displays it to the user.

GET / HTTP/1.1
Host: ddiwu.com
Accept: */*
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; [email protected])

<!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title> Wu Di </title> <meta name="author" content="Wu Di"> <meta name="description" content="A simple, whitespace theme for academics. Based on [*folio](https://github.com/bogoli/-folio) design. 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Last year, I did some research about SerDes supervised by <a href="http://staff.ustc.edu.cn/~zlei/" rel="external nofollow noopener" target="_blank">Prof. Lei Zhao</a>.</p> <p>Now until January 2025, I am at National University of Singapore (NUS) as an intern supervised by <a href="https://www.comp.nus.edu.sg/~hebs/" rel="external nofollow noopener" target="_blank">Prof. He</a> and <a href="https://www.yaochen.site" rel="external nofollow noopener" target="_blank">Prof. Chen</a>.</p> <p>I am applying for a Ph.D. in CS or ECE, and will receive my B.S. degree in 2025. My research interests mainly include computer system and architecture.</p> <p>If you want to find my <a href="/assets/pdf/CV.pdf">CV</a> and <a href="/assets/pdf/trans.pdf">transcript</a>, please click.</p> </div> <h2> <a href="/news/" style="color: inherit">news</a> </h2> <div class="news"> <div class="table-responsive"> <table class="table table-sm table-borderless"> <tr> <th scope="row" style="width: 20%">Feb 17, 2025</th> <td> My paper “Configurable DSP-Based CAM Architecture for Data-Intensive Application FPGAs” has been accepted by DAC’25! </td> </tr> <tr> <th scope="row" style="width: 20%">Dec 21, 2024</th> <td> Update my web frame and content! <img class="emoji" title=":smile:" alt=":smile:" src="https://github.githubassets.com/images/icons/emoji/unicode/1f604.png" height="20" width="20"> </td> </tr> <tr> <th scope="row" style="width: 20%">Mar 13, 2024</th> <td> I build my own website well! <img class="emoji" title=":sparkles:" alt=":sparkles:" src="https://github.githubassets.com/images/icons/emoji/unicode/2728.png" height="20" width="20"> </td> </tr> </table> </div> </div> <h2> <a href="/blog/" style="color: inherit">latest posts</a> </h2> <div class="news"> <div class="table-responsive" style="max-height: 60vw"> <table class="table table-sm table-borderless"> <tr> <th scope="row" style="width: 20%">Apr 01, 2024</th> <td> <a class="news-title" href="/blog/2024/pdf_principal/">The Introduction to PDF</a> </td> </tr> <tr> <th scope="row" style="width: 20%">Mar 05, 2024</th> <td> <a class="news-title" href="/blog/2024/code/">Automatically report ip</a> </td> </tr> <tr> <th scope="row" style="width: 20%">Jan 27, 2024</th> <td> <a class="news-title" href="/blog/2024/vega-lite/">Vega Lite</a> </td> </tr> </table> </div> </div> <h2> <a href="/publications/" style="color: inherit">selected publications</a> </h2> <div class="publications"> <ol class="bibliography"><li> <div class="row"> <div class="col col-sm-2 abbr"> <abbr class="badge rounded w-100">SerDes</abbr> </div> <div id="SerDes" class="col-sm-8"> <div class="title">A 4x6.25-Gbs Serial Link Transmitter Core in 0.18-μm CMOS for high-speed front-end ASICs</div> <div class="author"> </div> <div class="periodical"> <em>Real Time</em>, 2024 </div> <div class="periodical"> </div> <div class="links"> <a class="abstract btn btn-sm z-depth-0" role="button">Abs</a> <a href="https://indico.cern.ch/event/940112/contributions/5764954/" class="btn btn-sm z-depth-0" role="button" rel="external nofollow noopener" target="_blank">HTML</a> <a href="/assets/pdf/rt2024.pdf" class="btn btn-sm z-depth-0" role="button">PDF</a> </div> <div class="abstract hidden"> <p>In this paper, a 4x6.25 Gbps serial link transmitter core has been designed for high-speed front-end ASICs. The transmitter core is implemented in a commercial 0.18 um CMOS technology. The core consists of a common PLL and four individual transmitter channels. Each channel contains a 2-stage 20:2 serializer, a 2-stage half-rate feed-forward equalizer and a clock manager circuit. A new architecture of the clock and data path is proposed, and the overall power consumption is reduced by 40% compared with previous works. At a data rate of 6.25 Gbps, the simulation results show that the PLL and transmitter feature a phase jitter of 1.3 ps RMS and 11.2 ps pk-pk respectively. The 4-channel transmitter core occupies 0.44 mm2 and dissipates 27.7 mW/Gbps from 1.8 V supply. The chip is being packaged and will be tested soon in December.</p> </div> </div> </div> </li></ol> </div> <div class="social"> <div class="contact-icons"> <a href="mailto:%77%64%33%32%37%31%33%39%31%38%39%31@%6D%61%69%6C.%75%73%74%63.%65%64%75.%63%6E" title="email"><i class="fa-solid fa-envelope"></i></a> <a href="https://github.com/ddiwu" title="GitHub" rel="external nofollow noopener" target="_blank"><i class="fa-brands fa-github"></i></a> <a id="WeChatBtn" title="WeChat"><i class="fa-brands fa-weixin"></i></a> <div id="WeChatMod" class="wechat-modal"> <img src="/assets/img/wechat-qr.png" alt="WeChat QR" id="WeChatQR"> </div> <script>for(var wechatModal=document.getElementById("WeChatMod"),wechatBtn=document.querySelectorAll('[id="WeChatBtn"]'),i=0;i<wechatBtn.length;i++)wechatBtn[i].onclick=function(){wechatModal.style.display="block"};window.onclick=function(t){t.target==wechatModal&&(wechatModal.style.display="none")};</script> </div> <div class="contact-note">Welcome to reach me by the following email! </div> </div> </article> </div> </div> <footer class="fixed-bottom" role="contentinfo"> <div class="container mt-0"> © Copyright 2025 Wu Di. 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