ref: https://vivek-singh.medium.com/system-design-cheat-sheet-318ba2e34723
本篇文章是一個筆記文,紀錄關於 System Design 路上常遇到的架構與元件,譬如
1. LoadBalancer
2. Caches
3. Queues
4. Configuration Service
5. API Gateway
6. Service Mesh
7. CDN
8. Cassandra
9. Snowflake
10. Numbers
每個概念都還會附上一些相關影片與文章,也因為是個筆記內容,因此每個元件的介紹都不會非常詳細,都是小小段落介紹每個元件的最基本概念。
譬如 LoadBalancer 的筆記有
1. L4/L7 兩種的差異
2. AWS 上 ELB/ALB/NLB 的三種差異
3. LB 的演算法, Round Robin,Weighted RR, Least Connection/Response Time/Resource based 等
Caches
1. 實作有 Memcached, Redis 等相關專案
2. 什麼時候會使用 Memcached:
a. 需求簡單,譬如單純 Key/Value 字串,可以輕易地透過調整 cores/threads 來調整效能。
b. Volatile,沒有儲存機制
c. 只有 LRU 的 Cache 演算法
d. Key 最多 250B, Value 最多 1MB
3. 什麼時候使用 Redis
a. 需要儲存 object,而非單純 string
b. 支援多種演算法
c. 支援 data store,可以達到 non-volatile 效果
d. 可以支援 Set/Hash/List/Sorted Set 不同型態
這類型的文章對於踏入 System Design 能夠提供一個簡易的入門介紹,先有哪些類別需要學習,再針對每個類別獨立學習也是一個不錯的學習路徑。
同時也有19部Youtube影片,追蹤數超過0的網紅Coolgang,也在其Youtube影片中提到,羅斯威爾飛碟墜毀事件是 1947年在美國新墨西哥州羅斯威爾市發生的不明飛行物體墜毀事件。 事件發生後,美國藍皮書計劃於1952年正式開始,目的是重新處理UFO檔案,並為此建立機密級別;然後送到美國國家檔案管理局儲存。 根據當年的新聞報導以及近年的一些歷史紀錄片片段,我試著還原真相。 墜毀的飛碟總共有...
「service object」的推薦目錄:
service object 在 Milton Goh Blog and Sermon Notes Facebook 的精選貼文
The Power of Focusing on Jesus
“Therefore let us also, seeing we are surrounded by so great a cloud of witnesses, lay aside every weight and the sin which so easily entangles us, and let us run with perseverance the race that is set before us, looking to Jesus, the author and perfecter of faith, who for the joy that was set before him endured the cross, despising its shame, and has sat down at the right hand of the throne of God.” (Hebrews 12:1-2 WEB)
Nowadays in the mornings, I set a 5-minute countdown timer on my phone and place it in front of my daughter Mae while she is drinking her milk.
It helps her to focus on the task at hand, challenging herself to drink her milk consistently and finish at within a reasonable timing.
Before doing this, Mae was distracted by her own wandering thoughts, playing with all the items around her, instead of drinking the milk.
Even adults like us can benefit from having an object of focus. Without focus, we are more likely to be driven around by the whims and fancies of our sinful flesh, doing what is unprofitable and death-inducing.
When we lack focus, we fall for the illusion that there is still a lot of time to waste. We end up doing things to ‘kill time’, using this purest currency unprofitably or even self-destructively.
On the other hand, when we look to Jesus, we will be able to focus on being led by His Spirit; receiving the supply of grace needful for everything in life.
The author of the epistle to the Hebrews likened our mortal lifetime to a “race”. In a race, every second counts—time is precious. There are winners and losers, and prizes to be won.
This prize is not talking about earning our salvation, but rather winning eternal rewards. We are already saved, but not everyone will receive the same measure of rewards. Rewards like special positions of honor will be given to us based on the good works that we have done in service to the Lord Jesus, using the grace that He first gave to us.
Jesus set His eyes on the prize (our redemption), ran His race, enduring the pain, and finally sat down at the right hand of God as the winner.
There is an eternity for you to sit down, after you have completed the race that is set before you.
If you get distracted by every rabbit or fallen leaf along the race course, you will never be a winner. The enemy throws many distractions in our path, hoping that we will forfeit the race. He will do anything to make us turn away from Jesus.
If you have been distracted by the enemy, this is a loving reminder for you to keep your eyes on Jesus again.
Something happens when you look at Him—faith rises up in you, enabling you to receive God’s power to continue running, and to overcome every obstacle.
“Peter answered him and said, “Lord, if it is you, command me to come to you on the waters.” He said, “Come!” Peter stepped down from the boat, and walked on the waters to come to Jesus. But when he saw that the wind was strong, he was afraid, and beginning to sink, he cried out, saying, “Lord, save me!”” (Matthew 14:28-30 WEB)
The incident of Peter walking on water perfectly demonstrates the power of keeping our eyes on Jesus.
When Peter’s focus was on going over to Jesus, he walked on water just like Jesus. By beholding the Lord, Peter was transformed into the same image, doing the supernatural works of God.
However, when Peter was distracted by the strong wind, his focus shifted and he lost the ability to walk on water. His mind raced with thoughts, probably reasoning how it is impossible to walk on water and how dangerous his current situation was. He became natural again, just like what he newly focused on.
If you want supernatural results, look to Jesus. As long as your eyes are steadfastly fixed on Him, your faith will be active and effective. What is naturally impossible will become possible to you!
Did you enjoy this teaching? When you become a “God Every Morning” (GEM) tier or above patron on Patreon, you will also receive rewards like daily devotionals by email, daily Bible study teachings via the patron WhatsApp chat group, access to an archive of 600+ devotionals, and all my eBooks. Click the “Become a patron” button to join our community as a patron. Thank you for supporting this ministry with your gifts: http://Patreon.com/miltongohblog
service object 在 Pure Storage Facebook 的精選貼文
ICYMI: Our own Shawn Rosemarin was featured in StorageNewsletter Vendors Predictions for 2021, highlighting trends around as-a-service consumption, enterprise efficiency and unified fast file and object. Check out Shawn’s full predictions here: https://purefla.sh/2MjN5us
service object 在 Coolgang Youtube 的最佳解答
羅斯威爾飛碟墜毀事件是 1947年在美國新墨西哥州羅斯威爾市發生的不明飛行物體墜毀事件。
事件發生後,美國藍皮書計劃於1952年正式開始,目的是重新處理UFO檔案,並為此建立機密級別;然後送到美國國家檔案管理局儲存。
根據當年的新聞報導以及近年的一些歷史紀錄片片段,我試著還原真相。
墜毀的飛碟總共有兩艘🛸
事件中只有一位生存的外星人,就是埃本斯 Ebens👽 EBE#1
來自行星SERPO,DIA名稱為DIALP-0916 Zeta Reticuli I和II系統= 距離地球38.42光年
埃本斯(EBE#1)是一名機械師,它能夠通過圖片與陸軍人員進行交流。
就是出現在影片中,傳說外號 Skinny Bob 的外星人👽
1952年去世,後來才有Project Serpo 就是要把外星遺體送回埃本斯星球。
Project Serpo 是一個外星人與地球人交換計畫,從1965年成立。
透過羅斯威爾生存下來的 EBE#1 傳送的訊息回到家鄉行星SERPO聯繫地球。
以下是根據可靠消息紀錄下的詳細過程(有興趣可以進去看)
http://serpo.org/release35.php
http://serpo.org/release36.php
影片畫面的模擬影像素材是來自:
歷史頻道 (History)中的遠古外星人 (Ancient Aliens)紀錄片,喜歡外星人題材可以去看這系列。
https://www.youtube.com/playlist?list=PLob1mZcVWOaiVxrCiEyYXcAbmx7UY8ggW
你認為羅斯威爾飛碟墜毀事件真的是美國軍方宣稱的間諜氣球嗎?
還是你相信真的有外星人的存在呢?
The Roswell UFO crash was in Roswell, New Mexico, the USA in 1947.
After the incident, the U.S. Blue Book Project officially began in 1952, with the goal of reprocessing UFO files and establishing a level of confidentiality for this; then it was sent to the U.S. National Archives Service for storage.
According to the news reports that year and some historical documentary clips in recent years, I tried to restore the truth.
There are two crashed flying saucers in total 🛸
There was only one surviving alien in the incident, which was Ebens.(Extraterrestrial Biological Entity)
Do you think the Roswell UFO crash was really a spy balloon declared by the US military?
Or do you believe that there are really aliens? Skinny Bob 👽
Check out 🤘
👽酷奇王 FB https://goo.gl/vYfSEk
👽酷奇王 IG@afropopcorn
https://www.instagram.com/afropopcorn/
Peace & Love 👽
#外星人 #Roswell #Alien
service object 在 Shiney Youtube 的最讚貼文
ซื้อเกมได้ที่ https://store.epicgames.com/legendauser/control
Control พากย์ไทย แปลไทย
Control with Ray Tracing On
Control is an action-adventure video game developed by Remedy Entertainment and published by 505 Games. The game revolves around the Federal Bureau of Control (FBC), a secret U.S. government agency tasked with containing and studying phenomena which violate the laws of reality. As Jesse Faden, the Bureau's new Director, players explore the Oldest House – the FBC's paranormal New York headquarters – and utilize powerful abilities in order to defeat a deadly enemy known only as the Hiss, which has invaded and corrupted reality. Control was released on August 27, 2019 for Microsoft Windows (via the Epic Games Store), PlayStation 4, and Xbox One.
Control revolves around a clandestine United States government agency known as the Federal Bureau of Control (FBC). The FBC's goal is to contain, study, and ultimately control objects and phenomena which defy scientific law. To that end, they seek out paranormal phenomena on a national scale, including "Altered Items", ordinary objects acted upon by otherworldly forces, and "Altered World Events," or AWEs. Certain Altered Items known as Objects of Power cause AWEs, and can be used in-game to gain new abilities. The FBC contains Altered Items within the Oldest House, a featureless Brutalist skyscraper in Manhattan that acts as the agency's headquarters. The Oldest House itself is considered a "Place of Power," and is vastly larger on the inside than on the outside, breaking the laws of reality. The Oldest House is connected to alternate dimensions which are studied by the FBC. Otherworldly forces leak into the Oldest House, including the Hiss, an unidentified force which acts as Control's main antagonist. During the events of the game, the Hiss invades the Oldest House and the FBC, and Jesse Faden is tasked with regaining control of the supernatural building and restoring order to the Bureau.
Jesse Faden arrives at the Federal Bureau of Control in search of her younger brother, Dylan, who was kidnapped by the Bureau in their childhood after a supernatural event occurred in their hometown of Ordinary. Arriving at the Oldest House, the FBC's supernatural headquarters, Jesse finds it under attack by a hostile force known only as "the Hiss," which possesses the FBC's agents and corrupts the building. After Zachariah Trench, the Bureau's Director, is killed mysteriously, Jesse is unexpectedly deemed to be the new Director after she is chosen to wield the Service Weapon, a supernatural Object of Power which determines the Bureau's leadership. Wielding a host of supernatural powers, Jesse is tasked with defeating the Hiss and restoring order to the Oldest House. Along the way, she locates the scattered surviving agents of the FBC, including Research Specialist Emily Pope, Security Chief Simon Arish, Head of Research Casper Darling, Head of Operations Helen Marshall, and Head of Security Salvador.
service object 在 Shiney Youtube 的精選貼文
ซื้อเกมได้ที่ https://store.epicgames.com/legendauser/control
Control พากย์ไทย แปลไทย
Control with Ray Tracing On
Control is an action-adventure video game developed by Remedy Entertainment and published by 505 Games. The game revolves around the Federal Bureau of Control (FBC), a secret U.S. government agency tasked with containing and studying phenomena which violate the laws of reality. As Jesse Faden, the Bureau's new Director, players explore the Oldest House – the FBC's paranormal New York headquarters – and utilize powerful abilities in order to defeat a deadly enemy known only as the Hiss, which has invaded and corrupted reality. Control was released on August 27, 2019 for Microsoft Windows (via the Epic Games Store), PlayStation 4, and Xbox One.
Control revolves around a clandestine United States government agency known as the Federal Bureau of Control (FBC). The FBC's goal is to contain, study, and ultimately control objects and phenomena which defy scientific law. To that end, they seek out paranormal phenomena on a national scale, including "Altered Items", ordinary objects acted upon by otherworldly forces, and "Altered World Events," or AWEs. Certain Altered Items known as Objects of Power cause AWEs, and can be used in-game to gain new abilities. The FBC contains Altered Items within the Oldest House, a featureless Brutalist skyscraper in Manhattan that acts as the agency's headquarters. The Oldest House itself is considered a "Place of Power," and is vastly larger on the inside than on the outside, breaking the laws of reality. The Oldest House is connected to alternate dimensions which are studied by the FBC. Otherworldly forces leak into the Oldest House, including the Hiss, an unidentified force which acts as Control's main antagonist. During the events of the game, the Hiss invades the Oldest House and the FBC, and Jesse Faden is tasked with regaining control of the supernatural building and restoring order to the Bureau.
Jesse Faden arrives at the Federal Bureau of Control in search of her younger brother, Dylan, who was kidnapped by the Bureau in their childhood after a supernatural event occurred in their hometown of Ordinary. Arriving at the Oldest House, the FBC's supernatural headquarters, Jesse finds it under attack by a hostile force known only as "the Hiss," which possesses the FBC's agents and corrupts the building. After Zachariah Trench, the Bureau's Director, is killed mysteriously, Jesse is unexpectedly deemed to be the new Director after she is chosen to wield the Service Weapon, a supernatural Object of Power which determines the Bureau's leadership. Wielding a host of supernatural powers, Jesse is tasked with defeating the Hiss and restoring order to the Oldest House. Along the way, she locates the scattered surviving agents of the FBC, including Research Specialist Emily Pope, Security Chief Simon Arish, Head of Research Casper Darling, Head of Operations Helen Marshall, and Head of Security Salvador.