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22部Youtube影片,追蹤數超過236的網紅Jessica Chong-Jhingoree,也在其Youtube影片中提到,Hello! Thanks for stopping by. I am sure most of you have watched countless sourdough videos available out there, and most are mix by hand tutorials...
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cheat sheet 在 Jessica Chong-Jhingoree Youtube 的最佳解答
Hello!
Thanks for stopping by.
I am sure most of you have watched countless sourdough videos available out there, and most are mix by hand tutorials.
If you find joy in touching your dough and don’t mind the mess, well, good for you ??
But if you prefer a no-fuss and less messy way without compromising the end result, this recipe is for you!
See, I am impatient. I work a mentally demanding full time job, and when I make sourdough, I don’t like to fuss over them.
Normally, I maximise my yield for each batch by making 4-6 (sometimes 8!) loaves of sourdough, because making 1 or 10 loaves to me takes the same amount of preparation and effort.
Anyway, here’s the recipe.
Enjoy!
Ingredients:
300g Bob’s Artisan Bread Flour (or any high protein bread flour, at least 12-13% protein)
65g starter (tripled, use at peak)
233g water (room temperature)
6g Pink Himalayan Salt (or regular salt)
Method:
1. Autolyse 30 minutes
2. Add starter, mix, wait 15 minutes (I sometimes add salt together with starter when I am not in the mood and still get great results)
3. Add salt, mix, wait 15 minutes
4. Transfer to a bulking dish
5. Coil fold x 1
6. Coil fold x 2
7. Coil fold x 3
8. Coil fold x 4 - skip this step if your dough is strong
9. Leave to bulk
10. Total bulk 4 hours at 28C
11. Final shape
12. Cold retard overnight at 3C - make sure your fridge temperature no more than 3C!
13. Preheat oven at 250C, fan mode, for 1 hour
14. Bake at 250C, fan mode, for 35 minutes, lid close
15. And 250C, fan mode, for 5 minutes, lid off
16. Let bread cool completely before cutting, at least 1 hour
—————————————————————————————
#sourdough #opencrumb #sourdoughbread
Notes:
Always begin with a strong and healthy starter.
Make sure your dough has increased 50% in size.
As beginners, I know it is very hard to determine if your dough has finished its bulk fermentation based on the look and feel, due to the lack of experience. I know that feeling very well, because I was once that lost, clueless beginner myself.
After tinkering with sourdough for about a year, I have come up with a rough timing guide for bulk fermentation based on room/kitchen temperature, well, sort of like a cheat sheet, so you can get the hang of sourdough bread making and get good results every time.
Remember, bulk fermentation starts when starter is mixed into the dough.
Hope this helps!
=========================================
23C = 6 1/2 hours
24C = 6 hours
25C = 5 1/2 hours
26C = 5 hours
27C = 4 1/2 hours
28C = 4 hours
29C = 3 1/2 hours
30C = 3 hours
31C = 2 1/2 hours
—————————————————————————————
Instagram:
Personal // https://instagram.com/puterijessica
Soap Making // https://instagram.com/thesoapproject
Sourdough // https://instagram.com/thefoodprojectmy
—————————————————————————————
Purchase Links:
Bob’s Artisan Bread Flour // https://www.amazon.com/Bobs-Red-Mill-Artisan-Ounces/dp/B019IKHF3M
Pink Himalayan Salt // https://www.amazon.com/HQOExpress-Organic-Pink-Himalayan-Salt/dp/B07QQL7VHP/ref=mp_s_a_1_6?dchild=1&keywords=himalayan+pink+salt&qid=1623762046&sr=8-6
Tanita Kitchen Scale // https://www.amazon.com/TANITA-Tonita-digital-cooking-KD-321/dp/B002WBTFDI
Tanita Room Thermometer // https://www.amazon.co.jp/-/en/Tanita-Thermometer-Humidity-Digital-Tabletop/dp/B010CK4Z9Y
Ikea Foljsam Bulking Dish // https://www.amazon.com/IKEA-503-112-69-Följsam-Clear-Glass/dp/B07L4L1YQC/ref=mp_s_a_1_3?dchild=1&keywords=ikea+foljsam&qid=1623762611&sr=8-3
Bread Banneton // https://www.amazon.co.uk/Banneton-Brotform-Rising-Proofing-Proving/dp/B01CCLAPQS
Bread Lame // https://www.amazon.com/UPKOCH-Wooden-Slashing-Plastic-Protective/dp/B081YNTM23/ref=mp_s_a_1_35?dchild=1&keywords=bread+lame&qid=1623930160&sr=8-35
Kuhn Rikon Bread Knife // https://www.amazon.com/Kuhn-Rikon-FBA_23505-Bread-Knife/dp/B009DOAINS
—————————————————————————————
Equipment Used:
Camera // iPhone XS Max
Mic // Shure MV88
Video Editing // InShot Pro
Audio Editing // Cubase Pro 10.5
—————————————————————————————
Music Credits:
Music by frumhere - the broken heart gang - https://thmatc.co/?l=23888EC7
Intro Music:
Music: Intro
Musician: Jeff Kaale
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