https://yue-jenny.github.io/tags/pulling-and-streaming/ Recent content in Pulling And Streaming on Jenny blog Hugo -- gohugo.io en-us Mon, 06 Feb 2023 23:24:44 +0800 https://yue-jenny.github.io/2023/02/%E7%B3%BB%E7%B5%B1%E8%A8%AD%E8%A8%88%E5%9F%BA%E7%A4%8E%E7%AD%86%E8%A8%98%E5%85%AB-pulling-and-streaming/ Mon, 06 Feb 2023 23:24:44 +0800 https://yue-jenny.github.io/2023/02/%E7%B3%BB%E7%B5%B1%E8%A8%AD%E8%A8%88%E5%9F%BA%E7%A4%8E%E7%AD%86%E8%A8%98%E5%85%AB-pulling-and-streaming/ <h2 id="pulling-and-streaming">Pulling And Streaming</h2> <h3 id="prerequistites">Prerequistites</h3> <ul> <li>Client-Server Model <ul> <li>client 發 request，server 提供資料或服務給 client</li> </ul> </li> <li>Socket <ul> <li>是一種一種網路傳輸協定，實現 client 與 server 的雙向溝通機制，使用 TCP 連線，透過 HTTP 3-way handshake 建立連線</li> <li>目的是可以即時地讓雙方交換資訊，應用場景如聊天室</li> <li>優點是較少開銷、即時性、二進位支援等</li> </ul> </li> </ul> <h3 id="polling">Polling</h3> <ul> <li>每隔多少固定的時間去更新資料</li> </ul> <h3 id="streaming-pushing">Streaming (Pushing)</h3> <ul> <li><strong>持續</strong>與 server 保持連線，並隨時取得最新資料</li> </ul> <p><img src="https://yue-jenny.github.io/2023/02/%E7%B3%BB%E7%B5%B1%E8%A8%AD%E8%A8%88%E5%9F%BA%E7%A4%8E%E7%AD%86%E8%A8%98%E5%85%AB-pulling-and-streaming/polling-and-streaming.png" width="581" height="401" srcset="https://yue-jenny.github.io/2023/02/%E7%B3%BB%E7%B5%B1%E8%A8%AD%E8%A8%88%E5%9F%BA%E7%A4%8E%E7%AD%86%E8%A8%98%E5%85%AB-pulling-and-streaming/polling-and-streaming_huab6d95d64cfe2c9bc60d83fabcd5d583_25902_480x0_resize_box_3.png 480w, https://yue-jenny.github.io/2023/02/%E7%B3%BB%E7%B5%B1%E8%A8%AD%E8%A8%88%E5%9F%BA%E7%A4%8E%E7%AD%86%E8%A8%98%E5%85%AB-pulling-and-streaming/polling-and-streaming_huab6d95d64cfe2c9bc60d83fabcd5d583_25902_1024x0_resize_box_3.png 1024w" loading="lazy" alt="polling-and-streaming" class="gallery-image" data-flex-grow="144" data-flex-basis="347px" ></p> <h2 id="參考資料-">參考資料 👐</h2> <ul> <li><a class="link" href="https://developer.mozilla.org/en-US/docs/Web/API/WebSocket" target="_blank" rel="noopener" >WebSocket - Web APIs | MDN</a></li> <li><a class="link" href="https://www.geeksforgeeks.org/polling-and-streaming-concept-scenarios/" target="_blank" rel="noopener" >Polling and Streaming - Concept &amp; Scenarios - GeeksforGeeks</a></li> </ul> <p><strong>🍀 若喜歡我的分享，可以幫我拍拍手👏，是對我最大的鼓勵</strong></p>