並發程式設計中同步是如何運作的?

這是一個推薦產品對話框
熱門建議
起價
查看全部 >
語言
French
English
ไทย
German
繁體中文
國家/地區
All
登入/建立帳戶
language Selector,${0} is Selected
註冊並於Lenovo Pro 商務採購商店購物
於Lenovo教育商店註冊

專業等級福利

• 在 Think 每日價格上節省高達額外 3%
• 消費滿HK$78,000,晉升至 Plus 等級,享有更多福利

Plus 等級福利

• 在 Think 每日價格上節省高達額外 5%
• 消費滿HK$120,000,免費升級至擁有更多福利的菁英等級
等菁英級福利
• 在Think日常價格上節省高達額外8%
經銷商福利
• 可獲得Lenovo全系列產品的使用權
• 配置和購買價格優於Lenovo.com
查看所有詳情 >
再多達到
PRO Plus
PRO 菁英
恭喜,您已達到菁英地位!
Pro for Business
Delete icon Remove icon Add icon Reload icon
即將上市
已停產
暫時無法使用
Cooming Soon!
. Additional units will be charged at the non-eCoupon price. Purchase additional now
We're sorry, the maximum quantity you are able to buy at this amazing eCoupon price is
登入或建立帳戶以儲存您的購物車!
登錄或創建帳戶以加入獎勵計劃
檢視購物車
Wow, your cart is empty!
移除
item(s) in cart
Fill it in with great deals
Some items in your cart are no longer available. Please visit cart for more details.
has been deleted
Please review your cart as items have changed.
/
Contains Add-ons
繼續進行結帳
是的
Popular Searches
今天您想找什麼?
Trending
Recent Searches
Hamburger Menu
{"arrowColor":"#ffffff","backgroundColor":"#285d50","divideColor":"","sideMsg":"","data":[{"pcInfo":"","mAndTabInfo":"","bannerInfo":{"t_id":"Pageb7f2e1ff-3557-49a5-94a2-7c82c8dee25b","language":{"zh_hk":"%3Cp%20style%3D%22text-wrap%3A%20wrap%3B%22%3E%3Cspan%20style%3D%22color%3A%20rgb(255%2C%20255%2C%20255)%3B%22%3E%3Cstrong%3ELenovo%20Pro%20%E4%BC%81%E6%A5%AD%E5%B0%88%E4%BA%AB%E9%AB%98%E9%81%94%208%20%E6%8A%98%E8%B3%BC%E7%89%A9%E5%84%AA%E6%83%A0%3C%2Fstrong%3E%26nbsp%3B%7C%20%E7%99%BB%E8%A8%98%E5%8D%B3%E7%8D%B2%E9%AB%98%E9%81%94%246%2C000%E8%BF%8E%E6%96%B0%E6%8A%98%E6%89%A3%20%2B%20%E5%85%8D%E8%B2%BB%E7%A6%AE%E7%89%A9%EF%BC%81%3C%2Fspan%3E%3C%2Fp%3E%3Cp%20style%3D%22text-wrap%3A%20wrap%3B%22%3E%3Cspan%20style%3D%22color%3A%20rgb(255%2C%20255%2C%20255)%3B%22%3E%E8%87%B4%E9%9B%BB%26nbsp%3B%3Ca%20href%3D%22tel%3A25930388%22%20style%3D%22color%3A%20rgb(255%2C%20192%2C%200)%3B%20text-decoration%3A%20underline%3B%22%3E%3Cspan%20style%3D%22color%3A%20rgb(255%2C%20192%2C%200)%3B%22%3E%3Cstrong%3E2593%200388%3C%2Fstrong%3E%3C%2Fspan%3E%3C%2Fa%3E%26nbsp%3B%E8%A7%A3%E9%8E%96%E5%84%AA%E6%83%A0%26nbsp%3B%20%26nbsp%3B%20%26nbsp%3B%26nbsp%3B%3C%2Fspan%3E%3Ca%20href%3D%22%2Fbusiness%2Fbenefits%2F%3FipromoID%3Dhellobar_01_lpro_learn%22%20target%3D%22_blank%22%20textvalue%3D%22%E7%9E%AD%E8%A7%A3%E6%9B%B4%E5%A4%9A%22%20style%3D%22color%3A%20rgb(255%2C%20255%2C%20255)%3B%20text-decoration%3A%20underline%3B%22%3E%3Cspan%20style%3D%22color%3A%20rgb(255%2C%20255%2C%20255)%3B%22%3E%3Cstrong%3E%E7%9E%AD%E8%A7%A3%E6%9B%B4%E5%A4%9A%3C%2Fstrong%3E%3C%2Fspan%3E%3C%2Fa%3E%3C%2Fp%3E%3Cp%3E%3Cbr%2F%3E%3C%2Fp%3E","en":"","en_hk":"%3Cp%20style%3D%22text-wrap%3A%20wrap%3B%22%3E%3Cspan%20style%3D%22color%3A%20rgb(255%2C%20255%2C%20255)%3B%20font-family%3A%20arial%2C%20helvetica%2C%20sans-serif%3B%22%3E%3Cstrong%3ELenovo%20Pro%20Business%20Offer%2020%25%20OFF%3C%2Fstrong%3E%26nbsp%3B%7C%20Join%20us%20to%20get%20up%20to%20%246%2C000%20Welcome%20Discount%20%2B%20Free%20Gift!%26nbsp%3B%3C%2Fspan%3E%3C%2Fp%3E%3Cp%20style%3D%22text-wrap%3A%20wrap%3B%22%3E%3Ca%20href%3D%22tel%3A25930388%22%20style%3D%22color%3A%20rgb(255%2C%20255%2C%20255)%3B%20font-family%3A%20arial%2C%20helvetica%2C%20sans-serif%3B%22%3E%3Cspan%20style%3D%22color%3A%20rgb(255%2C%20192%2C%200)%3B%22%3E%3Cstrong%3ECall%202593%200388%3C%2Fstrong%3E%3C%2Fspan%3E%3C%2Fa%3E%3Cspan%20style%3D%22font-family%3A%20arial%2C%20helvetica%2C%20sans-serif%3B%22%3E%3Cstrong%3E%3Cspan%20style%3D%22font-family%3A%20Montserrat%3B%20color%3A%20rgb(255%2C%20255%2C%20255)%3B%22%3E%26nbsp%3B%20%26nbsp%3B%20%26nbsp%3B%3C%2Fspan%3E%3C%2Fstrong%3E%26nbsp%3B%3C%2Fspan%3E%3Ca%20href%3D%22%2Fbusiness%2Fbenefits%2F%3FipromoID%3Dhellobar_01_lpro_learn%22%20target%3D%22_blank%22%20textvalue%3D%22Learn%20More%22%20style%3D%22color%3A%20rgb(255%2C%20255%2C%20255)%3B%20text-decoration%3A%20underline%3B%22%3E%3Cspan%20style%3D%22color%3A%20rgb(255%2C%20255%2C%20255)%3B%22%3E%3Cstrong%3ELearn%20More%3C%2Fstrong%3E%3C%2Fspan%3E%3C%2Fa%3E%3C%2Fp%3E%3Cp%3E%3Cbr%2F%3E%3C%2Fp%3E","zh":""},"id":"Pageb7f2e1ff-3557-49a5-94a2-7c82c8dee25b"},"gInfo":""},{"pcInfo":"","mAndTabInfo":"","bannerInfo":{"t_id":"Pagecfa8504b-eb77-4339-9085-bcf23eb1a764","language":{"zh_hk":"%3Cp%20style%3D%22text-wrap%3A%20wrap%3B%22%3E%3Cspan%20style%3D%22color%3A%20rgb(255%2C%20255%2C%20255)%3B%22%3ELenovo%20%E6%95%99%E8%82%B2%E5%84%AA%E6%83%A02023%26nbsp%3B%7C%20%E5%AD%B8%E7%94%9F%E5%8F%8A%E6%95%99%E8%81%B7%E5%93%A1%E5%8F%AF%E4%BA%AB%E4%BD%8E%E8%87%B36%E6%8A%98%E5%84%AA%E6%83%A0%2C%20%E4%BD%BF%E7%94%A8%20SheerID%E5%BF%AB%E9%80%9F%E8%AA%8D%E8%A8%BC%26nbsp%3B%3C%2Fspan%3E%3C%2Fp%3E%3Cp%20style%3D%22text-wrap%3A%20wrap%3B%22%3E%3Cspan%20style%3D%22color%3A%20rgb(255%2C%20255%2C%20255)%3B%22%3E%E8%87%B4%E9%9B%BB%26nbsp%3B%3Ca%20href%3D%22tel%3A25930388%22%20style%3D%22color%3A%20rgb(255%2C%20192%2C%200)%3B%20text-decoration%3A%20underline%3B%22%3E%3Cspan%20style%3D%22color%3A%20rgb(255%2C%20192%2C%200)%3B%22%3E%3Cstrong%3E2593%200388%3C%2Fstrong%3E%3C%2Fspan%3E%3C%2Fa%3E%26nbsp%3B%E8%A7%A3%E9%8E%96%E5%84%AA%E6%83%A0%26nbsp%3B%26nbsp%3B%20%26nbsp%3B%20%26nbsp%3B%26nbsp%3B%3C%2Fspan%3E%3Ca%20href%3D%22%2Fd%2Fschool-from-home%2F%3FipromoID%3Dhellobar_02_edu%22%20target%3D%22_blank%22%20textvalue%3D%22%E7%AB%8B%E5%8D%B3%E8%B3%BC%E8%B2%B7%22%20style%3D%22color%3A%20rgb(255%2C%20255%2C%20255)%3B%20text-decoration%3A%20underline%3B%22%3E%3Cspan%20style%3D%22color%3A%20rgb(255%2C%20255%2C%20255)%3B%22%3E%3Cstrong%3E%E7%AB%8B%E5%8D%B3%E8%B3%BC%E8%B2%B7%3C%2Fstrong%3E%3C%2Fspan%3E%3C%2Fa%3E%3C%2Fp%3E%3Cp%3E%3Cbr%2F%3E%3C%2Fp%3E","en":"","en_hk":"%3Cp%20style%3D%22text-wrap%3A%20wrap%3B%22%3E%3Cspan%20style%3D%22color%3A%20rgb(255%2C%20255%2C%20255)%3B%20font-family%3A%20Montserrat%3B%22%3E%3Cstrong%3E%3Cspan%20style%3D%22color%3A%20rgb(255%2C%20255%2C%20255)%3B%20font-family%3A%20arial%2C%20helvetica%2C%20sans-serif%3B%22%3E%3C%2Fspan%3EBack%20to%20School%3C%2Fstrong%3E%26nbsp%3B%7C%20Join%20Lenovo%20Education%20to%20enjoy%20up%20to%2040%25%20Discount%20for%20students%20%26amp%3B%20teachers.%20SheerID%20is%20applicable.%3C%2Fspan%3E%3C%2Fp%3E%3Cp%20style%3D%22text-wrap%3A%20wrap%3B%22%3E%3Cspan%20style%3D%22color%3A%20rgb(255%2C%20192%2C%200)%3B%20font-family%3A%20Montserrat%3B%22%3E%26nbsp%3B%3Ca%20href%3D%22tel%3A25930388%22%20style%3D%22color%3A%20rgb(255%2C%20192%2C%200)%3B%20text-decoration%3A%20underline%3B%22%3E%3Cstrong%3ECall%202593%200388%3C%2Fstrong%3E%3C%2Fa%3E%26nbsp%3B%20%26nbsp%3B%26nbsp%3B%3C%2Fspan%3E%3Ca%20href%3D%22%2Fd%2Fschool-from-home%2F%3FipromoID%3Dhellobar_02_edu%22%20target%3D%22_self%22%20textvalue%3D%22Shop%20now%22%20style%3D%22text-decoration%3A%20underline%3B%20color%3A%20rgb(255%2C%20255%2C%20255)%3B%20font-family%3A%20Montserrat%3B%22%3E%3Cspan%20style%3D%22color%3A%20rgb(255%2C%20255%2C%20255)%3B%20font-family%3A%20Montserrat%3B%22%3E%3Cstrong%3EShop%20now%3C%2Fstrong%3E%3C%2Fspan%3E%3C%2Fa%3E%3C%2Fp%3E","zh":""},"id":"Pagecfa8504b-eb77-4339-9085-bcf23eb1a764"},"gInfo":""},{"pcInfo":"","mAndTabInfo":"","bannerInfo":{"t_id":"Pagef53f1aa2-3b1d-4357-a57e-850230463f26","language":{"zh_hk":"%3Cp%20style%3D%22text-wrap%3A%20wrap%3B%22%3E%3Cspan%20style%3D%22color%3A%20rgb(255%2C%20255%2C%20255)%3B%22%3E%3Cstrong%3EPC%E4%BD%8E%E8%87%B37%E6%8A%98%3C%2Fstrong%3E%26nbsp%3B%7C%20%E7%B2%BE%E9%81%B8%E5%9E%8B%E8%99%9F%E7%8F%BE%E8%B2%A8%E7%99%BC%E5%94%AE%2C%20%E6%9C%80%E5%BF%AB3%E6%97%A5%E9%80%81%E8%B2%A8%EF%BC%81%E6%89%80%E6%9C%89%E8%A8%82%E5%96%AE%E5%9D%87%E4%BA%AB%E5%85%8D%E9%81%8B%E8%B2%BB%26nbsp%3B%26nbsp%3B%26nbsp%3B%3C%2Fspan%3E%3C%2Fp%3E%3Cp%20style%3D%22text-wrap%3A%20wrap%3B%22%3E%3Cspan%20style%3D%22color%3A%20rgb(255%2C%20255%2C%20255)%3B%22%3E%E8%87%B4%E9%9B%BB%26nbsp%3B%3Ca%20href%3D%22tel%3A25930388%22%20style%3D%22color%3A%20rgb(255%2C%20192%2C%200)%3B%20text-decoration%3A%20underline%3B%22%3E%3Cspan%20style%3D%22color%3A%20rgb(255%2C%20192%2C%200)%3B%22%3E%3Cstrong%3E2593%200388%3C%2Fstrong%3E%3C%2Fspan%3E%3C%2Fa%3E%26nbsp%3B%E8%A7%A3%E9%8E%96%E5%84%AA%E6%83%A0%26nbsp%3B%20%26nbsp%3B%20%26nbsp%3B%26nbsp%3B%3C%2Fspan%3E%3Ca%20href%3D%22%2Fd%2Fdeals%2Fexpress%2F%3FipromoID%3Dhellobar_03_quickship%22%20target%3D%22_blank%22%20textvalue%3D%22%E7%AB%8B%E5%8D%B3%E8%B3%BC%E8%B2%B7%22%20style%3D%22color%3A%20rgb(255%2C%20255%2C%20255)%3B%20text-decoration%3A%20underline%3B%22%3E%3Cspan%20style%3D%22color%3A%20rgb(255%2C%20255%2C%20255)%3B%22%3E%3Cstrong%3E%E7%AB%8B%E5%8D%B3%E8%B3%BC%E8%B2%B7%3C%2Fstrong%3E%3C%2Fspan%3E%3C%2Fa%3E%3C%2Fp%3E%3Cp%3E%3Cbr%2F%3E%3C%2Fp%3E","en":"","en_hk":"%3Cp%20style%3D%22text-wrap%3A%20wrap%3B%22%3E%3Cspan%20style%3D%22color%3A%20rgb(255%2C%20255%2C%20255)%3B%20font-family%3A%20arial%2C%20helvetica%2C%20sans-serif%3B%22%3E%3Cstrong%3EPC%20Up%20to%2030%25%20off%3C%2Fstrong%3E%26nbsp%3B%7C%20Selected%20models%20are%20on%20sale%20in%20stock%2C%20and%20the%20fastest%20delivery%20is%203%20days!%20Free%20shipping%20site-wide%2C%20no%20minimum%20spend.%3C%2Fspan%3E%3C%2Fp%3E%3Cp%20style%3D%22text-wrap%3A%20wrap%3B%22%3E%3Cspan%20style%3D%22color%3A%20rgb(255%2C%20255%2C%20255)%3B%20font-family%3A%20arial%2C%20helvetica%2C%20sans-serif%3B%22%3E%26nbsp%3B%3Ca%20href%3D%22tel%3A25930388%22%20style%3D%22color%3A%20rgb(255%2C%20192%2C%200)%3B%20text-decoration%3A%20underline%3B%22%3E%3Cspan%20style%3D%22font-family%3A%20Montserrat%3B%20color%3A%20rgb(255%2C%20192%2C%200)%3B%22%3E%3Cstrong%3ECall%202593%200388%3C%2Fstrong%3E%3C%2Fspan%3E%3C%2Fa%3E%26nbsp%3B%20%26nbsp%3B%20%26nbsp%3B%26nbsp%3B%3C%2Fspan%3E%3Ca%20href%3D%22%2Fd%2Fdeals%2Fexpress%2F%3FipromoID%3Dhellobar_03_quickship%22%20target%3D%22_blank%22%20textvalue%3D%22Shop%20now%22%20style%3D%22text-decoration%3A%20underline%3B%20color%3A%20rgb(255%2C%20255%2C%20255)%3B%20font-family%3A%20arial%2C%20helvetica%2C%20sans-serif%3B%22%3E%3Cspan%20style%3D%22color%3A%20rgb(255%2C%20255%2C%20255)%3B%20font-family%3A%20arial%2C%20helvetica%2C%20sans-serif%3B%22%3E%3Cstrong%3EShop%20now%3C%2Fstrong%3E%3C%2Fspan%3E%3C%2Fa%3E%3C%2Fp%3E%3Cp%3E%3Cbr%2F%3E%3C%2Fp%3E","zh":""},"id":"Pagef53f1aa2-3b1d-4357-a57e-850230463f26"},"gInfo":""},{"pcInfo":"","mAndTabInfo":"","bannerInfo":{"t_id":"Page40a4db87-5fc2-477e-aa8e-51281582d62c","language":{"zh_hk":"%3Cp%3E%3Cspan%20style%3D%22text-wrap%3A%20wrap%3B%20color%3A%20rgb(255%2C%20255%2C%20255)%3B%20font-family%3A%20arial%2C%20helvetica%2C%20sans-serif%3B%22%3E%E6%9C%89%E7%96%91%E5%95%8F%E5%97%8E%EF%BC%9F%20%E5%A6%82%E9%9C%80%E6%88%91%E5%80%91%E7%9A%84%E5%B0%88%E5%AE%B6%E5%BB%BA%E8%AD%B0%EF%BC%8C%E8%AB%8B%E8%87%B4%E9%9B%BB%26nbsp%3B%3Ca%20href%3D%22tel%3A25930388%22%20style%3D%22color%3A%20rgb(255%2C%20255%2C%20255)%3B%22%3E%3Cspan%20style%3D%22color%3A%20rgb(255%2C%20192%2C%200)%3B%22%3E%3Cstrong%3E2593%200388%3C%2Fstrong%3E%3C%2Fspan%3E%3Cstrong%3E%E6%88%96%E9%BB%9E%E6%93%8A%E3%80%8C%E8%81%8A%E5%A4%A9%E3%80%8D%EF%BC%81%3C%2Fstrong%3E%3C%2Fa%3E%3C%2Fspan%3E%3Cspan%20style%3D%22text-wrap%3A%20wrap%3B%20font-family%3A%20arial%2C%20helvetica%2C%20sans-serif%3B%22%3E%26nbsp%3B%26nbsp%3B%3C%2Fspan%3E%3Ca%20target%3D%22_self%22%20class%3D%22live_chat_daily%22%20style%3D%22text-wrap%3A%20wrap%3B%20text-decoration-line%3A%20underline%3B%20color%3A%20rgb(255%2C%20255%2C%20255)%3B%20font-family%3A%20arial%2C%20helvetica%2C%20sans-serif%3B%22%3E%3Cstrong%3E%E8%81%AF%E7%B5%A1%E6%88%91%E5%80%91%3C%2Fstrong%3E%3C%2Fa%3E%3C%2Fp%3E","en":"","en_hk":"%3Cp%3E%3Cspan%20style%3D%22text-wrap%3A%20wrap%3B%20color%3A%20rgb(255%2C%20255%2C%20255)%3B%20font-family%3A%20arial%2C%20helvetica%2C%20sans-serif%3B%22%3ENeed%20Help%3F%26nbsp%3B%26nbsp%3B%3Ca%20href%3D%22tel%3A25930388%22%20style%3D%22color%3A%20rgb(255%2C%20192%2C%200)%3B%22%3E%3Cstrong%3ECall%202593%200388%3C%2Fstrong%3E%3C%2Fa%3E%26nbsp%3B%26nbsp%3Bor%20Chat%20with%20us%20now!%3C%2Fspan%3E%3Cspan%20style%3D%22text-wrap%3A%20wrap%3B%20font-family%3A%20arial%2C%20helvetica%2C%20sans-serif%3B%22%3E%26nbsp%3B%26nbsp%3B%3C%2Fspan%3E%3Ca%20target%3D%22_self%22%20class%3D%22live_chat_daily%22%20style%3D%22text-wrap%3A%20wrap%3B%20text-decoration-line%3A%20underline%3B%20color%3A%20rgb(255%2C%20255%2C%20255)%3B%20font-family%3A%20arial%2C%20helvetica%2C%20sans-serif%3B%22%3E%3Cstrong%3EContact%20Us%3C%2Fstrong%3E%3C%2Fa%3E%3C%2Fp%3E","zh":""},"id":"Page40a4db87-5fc2-477e-aa8e-51281582d62c"},"gInfo":""},{"pcInfo":"","mAndTabInfo":"","bannerInfo":{"t_id":"Page4daeae9a-96ce-41de-bb12-39e5cc32e16a","language":{"zh_hk":"%3Cp%3E%3Cspan%20style%3D%22color%3A%20rgb(255%2C%20255%2C%20255)%3B%22%3E%E5%B9%B4%E5%BA%A6%E6%9C%80%E5%BC%B711.11%E5%84%AA%E6%83%A0%20%7C%20%E6%89%8B%E6%8F%90%E9%9B%BB%E8%85%A6%E6%BF%80%E6%B8%9B%E8%87%B3%20%241%2C798!%20%E8%B3%BC%E7%89%A9%E9%80%81%24400%E8%B6%85%E5%B8%82%E7%A6%AE%E5%88%B8!%26nbsp%3B%20%26nbsp%3B%20%26nbsp%3B%3C%2Fspan%3E%3Ca%20href%3D%22%2Fd%2Fdeals%2Fspecial-offer%2F%22%20target%3D%22_self%22%20style%3D%22color%3A%20rgb(255%2C%20255%2C%20255)%3B%20text-decoration%3A%20underline%3B%22%3E%3Cspan%20style%3D%22color%3A%20rgb(255%2C%20255%2C%20255)%3B%22%3E%3Cstrong%3E11.11%E7%B2%BE%E9%81%B8%E5%9E%8B%E8%99%9F%3C%2Fstrong%3E%3C%2Fspan%3E%3C%2Fa%3E%3C%2Fp%3E","en":"%3Cp%3E%3Cspan%20style%3D%22text-wrap%3A%20wrap%3B%20color%3A%20rgb(255%2C%20255%2C%20255)%3B%22%3EMega%20Clearance%20Sale%20%7C%20Laptops%20starts%20at%20%241%2C998%26nbsp%3B%20%26nbsp%3B%20Up%20to%2040%25%20off%20for%20Gaming%20PCs%2FYoga%20PCs%26nbsp%3B%20%26nbsp%3B%20Free%20shipping%20on%20any%20orders%2C%20as%20fast%20as%202%20days%26nbsp%3B%20%26nbsp%3B%20%26nbsp%3B%3C%2Fspan%3E%3Ca%20href%3D%22https%3A%2F%2Fadmin.lenovo.com%2Fd%2Fdeals%2Fspecial-offer%2F%3FipromoID%3Dhellobar_05%22%20target%3D%22_blank%22%20title%3D%22Mega%20Clearance%22%20style%3D%22text-wrap%3A%20wrap%3B%20color%3A%20rgb(255%2C%20255%2C%20255)%3B%22%3E%3Cstrong%3EMega%20Clearance%3C%2Fstrong%3E%3C%2Fa%3E%3C%2Fp%3E","en_hk":"%3Cp%3E%3Cspan%20style%3D%22color%3A%20rgb(255%2C%20255%2C%20255)%3B%22%3E11.11%20Crazy%20Deals%20%7C%20Laptop%20Starting%20at%20%241798!%20Get%20%24400%20supermarket%20vouchers!%26nbsp%3B%20%26nbsp%3B%20%26nbsp%3B%3C%2Fspan%3E%3Ca%20href%3D%22%2Fd%2Fdeals%2Fspecial-offer%2F%22%20target%3D%22_self%22%20style%3D%22color%3A%20rgb(255%2C%20255%2C%20255)%3B%20text-decoration%3A%20underline%3B%22%3E%3Cspan%20style%3D%22color%3A%20rgb(255%2C%20255%2C%20255)%3B%22%3E%3Cstrong%3E11.11%20Deals%3C%2Fstrong%3E%3C%2Fspan%3E%3C%2Fa%3E%3C%2Fp%3E","zh":"%3Cp%3E%3Cspan%20style%3D%22text-wrap%3A%20wrap%3B%20color%3A%20rgb(255%2C%20255%2C%20255)%3B%22%3E%E7%A7%8B%E5%AD%A3%E9%96%8B%E5%80%89%E5%A4%A7%E6%BF%80%E8%B3%9E%7C%20%E9%9B%BB%E8%85%A6%E4%BD%8E%E8%87%B3%241%2C998%E8%B5%B7%26nbsp%3B%20%E9%9B%BB%E7%AB%B6%E9%9B%BB%E8%85%A6%2FYoga%E9%9B%BB%E8%85%A6%E4%BD%8E%E8%87%B36%E6%8A%98%20%E4%BB%BB%E4%BD%95%E8%A8%82%E5%96%AE%E5%85%8D%E8%B2%BB%E9%80%81%E8%B2%A8%20%E6%9C%80%E5%BF%AB2%E6%97%A5%E9%80%81%E5%88%B0%26nbsp%3B%20%26nbsp%3B%26nbsp%3B%3C%2Fspan%3E%3Ca%20href%3D%22https%3A%2F%2Fadmin.lenovo.com%2Fd%2Fnotebook-recommendation%2F%3FipromoID%3Dhellobar_05%22%20target%3D%22_blank%22%20title%3D%22%E5%8D%B3%E6%90%B6%E7%A7%8B%E5%AD%A3%E9%96%8B%E5%80%89%E5%84%AA%E6%83%A0%22%20style%3D%22text-wrap%3A%20wrap%3B%20color%3A%20rgb(255%2C%20255%2C%20255)%3B%22%3E%3Cstrong%3E%E5%8D%B3%E6%90%B6%E7%A7%8B%E5%AD%A3%E9%96%8B%E5%80%89%E5%84%AA%E6%83%A0%3C%2Fstrong%3E%3C%2Fa%3E%3Cspan%20style%3D%22text-wrap%3A%20wrap%3B%22%3E%3C%2Fspan%3E%3C%2Fp%3E"},"id":"Page4daeae9a-96ce-41de-bb12-39e5cc32e16a"},"gInfo":""}],"autoRun":true,"isShowDivide":true}
11.11 最強折扣反應熱烈!
優惠延長一週!最後倒數,立即行動!
天數
小時
分鐘
秒數
11.11 最強折扣反應熱烈!
優惠延長一週!最後倒數,立即行動!
天數
小時
分鐘
秒數


並發程式設計中同步是如何運作的?

並發程式設計中的同步可確保多個執行緒或進程協調其活動,以避免衝突並確保資料一致性。它涉及使用鎖定、信號量和監視器等同步原語來強制對共享資源進行互斥存取。當執行緒或進程需要存取共享資源時,它會取得適當的同步原語,執行其操作,然後釋放它,以允許其他執行緒存取該資源。

為什麼同步在分散式系統中很重要?

同步在分散式系統中至關重要,可確保多個節點之間的行為一致且協調。它有助於維護資料完整性、防止競爭條件並強制執行排序保證。透過同步操作,分散式節點可以通訊、共享資源並實現一致的狀態,儘管面臨網路延遲、故障和並發的挑戰。

什麼時候應該使用同步通訊而不是非同步通訊?

同步通訊適用於發送方和接收方之間需要立即回應或嚴格排序的情況。它確保發送者在繼續之前等待回應。相反,當需要非阻塞和並行處理時,非同步通訊更可取,允許發送者在等待回應的同時繼續其他任務。非同步通訊可以增強系統的反應能力和可擴展性。

電腦網路中的時鐘同步如何運作?

電腦網路中的時鐘同步旨在跨多個裝置實現一致的時間概念。網路時間協定 (NTP) 等協定透過在時間伺服器和用戶端之間交換時間資訊來同步時鐘。 NTP 根據測量的時鐘偏差和網路延遲調整客戶端的時鐘。這種同步對於需要精確計時的各種網路應用程式至關重要,例如分散式檔案系統和即時資料處理。

為什麼同步在資料庫系統中很重要?

同步在資料庫系統中起著至關重要的作用,以確保資料的完整性和一致性。它保證存取共享資料的並發事務不會產生不正確或不一致的結果。資料庫系統使用鎖定機制、並發控制協定和事務隔離等級來協調對資料的存取並防止衝突。

多執行緒程式設計中同步常用在什麼地方?

多執行緒程式設計通常需要同步來管理共享資料結​​構。採用鎖、互斥體和條件變數等同步原語來保護程式碼的關鍵部分,確保一次只有一個執行緒存取共享資源。同步對於防止多執行緒應用程式中的競爭條件、資料損壞和不一致至關重要。

分散式檔案系統中的同步如何運作?

分散式檔案系統中的同步對於維護多個副本或節點之間的資料一致性至關重要。兩階段提交 (2PC) 或 Paxos 等一致性協議可確保所有副本在提交更改之前就事務結果達成協議。透過協調寫入作業的同步,分散式檔案系統可以防止不一致並提供對共用檔案的可靠存取。

為什麼同步在即時系統中很重要?

同步對於即時系統至關重要,以確保可預測和及時的回應。即時系統通常對任務完成有嚴格的期限,同步機制有助於協調任務的執行以滿足這些期限。透過同步關鍵操作和管理共享資源,即時系統可以保持確定性、避免資源衝突並提供可靠且可預測的行為。

並發資料結構中什麼地方使用了同步?

並發資料結構,例如並發佇列或雜湊表,依賴同步技術來實現安全且高效的並發存取。採用鎖、原子操作或樂觀並發控制等同步機制來確保多個執行緒可以安全地存取和修改資料結構,而不會導致資料損壞或不一致。

同步如何影響超級電腦中的平行處理?

同步對於超級電腦中協調數千甚至數百萬個計算元件之間的平行處理至關重要。屏障同步和集體操作等技術可確保所有處理器一起到達特定的同步點,從而實現高效的資料交換和平行運算。同步有助於協調超級電腦的分散式處理能力,並實現可擴展和高效能的科學模擬和數據分析。

為什麼時鐘同步在分散式資料庫中很重要?

在分散式資料庫中,時脈同步對於確保跨多個節點的操作的一致性和順序至關重要。透過同步時鐘,分散式資料庫可以確定因果關係、強制事務排序並提供系統狀態的全域快照。時鐘同步使分散式資料庫能夠維護資料完整性並支援分散式事務和複製資料庫等操作。

Web 應用程式中哪裡使用同步?

Web 應用程式通常需要同步來處理共用資源(例如資料庫或檔案系統)的並發存取。鎖或資料庫事務隔離等級等同步機制用於確保多個使用者或程序可以安全地存取和修改共享數據,而不會發生衝突或不一致。同步對於維護資料完整性和在 Web 應用程式中提供無縫使用者體驗至關重要。

什麼時候應該使用信號量等同步原語?

在多個執行緒或進程需要協調對一組有限資源的存取的情況下,信號量等同步原語非常有用。信號量允許根據可用許可授予或阻止存取來控制對資源的存取。特別適合需要規範資源分配、需要執行緒同步防止資源耗盡或衝突的場景。

同步如何影響並行演算法的效能?

由於協調對共享資源的存取的開銷,同步可能會影響並行演算法的效能。過度同步或鎖定爭用可能會引入瓶頸並降低並行可伸縮性。透過最小化鎖定粒度、採用無鎖或無等待演算法或採用細粒度同步技術來最佳化同步可以提高效能和並行效率。

為什麼同步在分散式訊息系統中很重要?

同步在分散式訊息系統中起著至關重要的作用,以確保跨多個節點可靠且有序地傳遞訊息。訊息傳遞協定利用同步機制(例如確認和傳送保證)來確保訊息一致性、防止訊息遺失並處理故障。同步可以在分散式訊息傳遞架構中實現可靠的通訊和協調。

雲端運算環境中哪些地方使用同步?

雲端運算環境中採用同步來管理對共享資源的存取並協調分散式應用程式的執行。分散式鎖定、分散式協調框架或共識演算法等技術可確保多個雲端實例或虛擬機器可以同步其活動、共享資源並保持資料一致性。同步對於雲端運算中的可擴充性、容錯性和高效資源利用至關重要。

什麼時候應該在分散式資料庫中使用同步複製?

當嚴格的資料一致性和持久性至關重要時,在分散式資料庫中使用同步複製。在同步複製中,寫入作業只有在複製到所有副本節點並被確認後才被視為完成。這可確保在寫入作業被視為成功之前,所有副本都擁有最新的資料副本。同步複製通常用於不可接受資料遺失或不一致的場景,例如金融系統或關鍵資料存儲,但代價是增加延遲和潛在的效能影響。

{"pageComponentDataId":"537198bf07954-401a-b47a-087e257f1d72","isAssociatedRelease":"true","pageComponentDataLangCode":"en_hk","configData":{"jumpType":"currentTab","headlineColor":"black","displayNumber":"","styleMode":"vertical","miniCardHoMode":"2","headline":"","products":[{"number":{"t_id":"len101t0102","language":{"zh_hk":"len101t0102","en":"","en_hk":"len101t0102","zh":""},"id":"Page497e178f-e4db-4b5b-b1a5-ec4687329efb"}},{"number":{"t_id":"len101t0104","language":{"zh_hk":"len101t0104","en":"","en_hk":"len101t0104","zh":""},"id":"Page9145835b-830f-4dee-9765-5a8ed87b670f"}},{"number":{"t_id":"len101t0081","language":{"zh_hk":"len101t0081","en":"","en_hk":"len101t0081","zh":""},"id":"Pagebb4de9bf-4262-41eb-9982-04bc0777035c"}},{"number":{"t_id":"len101g0036","language":{"zh_hk":"len101g0036","en":"","en_hk":"len101g0036","zh":""},"id":"Paged7259f59-5586-49c9-8b68-20a93f7b4c51"}}]},"urlPrefix":"AAAAAAALAAAG","needGetLatestTransDataKey":"needGetLatestTransDataValue","title":"glossary-right-blue-boxes-fragment","pageId":"82171833-6325-4d09-947e-5979c9876a90","urlEdit":0,"uri":"/FragmentDirectory/glossary/glossary-right-blue-boxes-fragment.frag","pageComponentId":"537198bf07954-401a-b47a-087e257f1d72","tplId":"c7389f9a-59c0-4c34-a9e1-f1c090c6ab86","pageComponentUuid":"537198bf07954-401a-b47a-087e257f1d72","targetUser":"0"}
即將上市
起價
建議售價
原價
網上售價:
建議售價
預估價值 (Estimated Value)
定價是Lenovo根據產業數據對產品價值的估算,包括第一方和第三方零售商和電商提供或估值相同或相似產品的價格。第三方經銷商數據可能不是基於實際銷售。
預估價值是Lenovo根據行業數據對產品價值的估算,包括Lenovo和/或第三方零售商和電子零售商提供或估值相同或相似產品的價格。第三方數據可能不是基於實際銷售。
了解更多
See More
See Less
查看 {0} 型號
查看 {0} 款型
shipping.options.for.{0}
產品編號
功能
查看更多
查看較少
比較
已加入!
好選擇!
您可以在每個產品類別(筆記本電腦、桌上型電腦等)中比較最多 4 項產品。請取消選擇一項才能新增另一項。
檢視您的比較
加入購物車
加入購物車
我們很抱歉,
產品暫時無法使用。
繼續購物
了解更多
即將上市
精選產品
精選產品
哎呀!未找到任何結果。請瀏覽上方的類別以尋找您的產品。
儲存
open in new tab
© 2024 Lenovo. 保留所有權利。
© {year} Lenovo. All rights reserved.
比較  ()
x