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@thnhl0403: @🌷 u me 😊#xhhhhhhhhhhhhhhhhhhhhhhh

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Wednesday 11 November 2026 00:18:31 GMT
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caideom.c2
Vannnnn truong :
hãy tôn trọng những ng độc thân
2026-11-11 08:05:57
59
kubobienhoa2706
Hận anh hớt tóc👀 :
tôn trọng người độc thân tí nào 😡
2026-11-11 09:49:10
8
0_0a136
⁽⁽ଘ( ˊᵕˋ )ଓ⁾⁾ :
bt ông tiên k
2026-11-11 10:27:50
1
np_khnaq
🐭 :
Cx ước☺️
2026-11-11 07:09:23
3
260221992le
Pé huyền FF 🐰 :
Ước gì có ng làm cho mjk nhỉ
2026-11-11 06:28:35
6
tranthuc2098
👤 :
Tôi hả
2026-11-11 08:15:42
1
exyujk
꧁༺XT༻꧂ :
hở gửi cho tui a
2026-11-11 10:00:59
0
nguyn.tin1006
nguyễn tiến :
Thích thế 🥴🥴🥴
2026-11-11 09:52:12
0
iuubaolamm
ᴀᴀᴋʜᴏᴀᴀ :
lm ơn hãy tôn trọng ng mới ctay🥹
2026-11-11 10:20:10
0
ngc.bch5907
chết luôn đi :
nhìn ng ta mà nản
2026-11-11 10:09:15
0
t.trang089
ミ★𝓣𝓱𝓾 𝓣𝓻𝓪𝓷𝓰★彡 :
để t lm thử
2026-11-11 09:39:18
0
ngocanh2692007
Sống ẩn nhé 🖤👤 :
Ước
2026-11-11 09:58:05
0
con.ngi.bnh.thng12
con người bình thường😣 :
Muốn
2026-11-11 10:22:32
0
1th4vtr
van_trung🍃 :
ng k có ny kiểu
2026-11-11 09:54:32
0
truu.vs
TRUU BOY☠️ 🆘✅ :
ô tên tôi
2026-11-11 09:52:35
0
nguoinongtinh3
nghĩ nhiều :
Cute ghê
2026-11-11 09:50:02
0
t426781
T. :
ko cần dau🤣🤣🤣
2026-11-11 10:09:41
0
cht.dz
chít ba' khi' 💋💓😘😍 :
rtttr
2026-11-11 05:27:59
0
thanhmai.292
thanh mai 😘 :
2026-11-11 08:49:39
0
tht.migh
t🦖 :
túi hỏ
2026-11-11 09:25:58
0
tuthanh872
TuThanh :
T phải tôi mới đúng
2026-11-11 09:14:54
0
ngns.khngs.ln
Lùn 😉 :
🥰
2026-11-11 08:57:33
0
tuandz5412
Tuấn_06 :
ui
2026-11-11 10:21:44
0
yeulmgichometnguoi..ra
lạy bố 😸! :
ô
2026-11-11 09:33:53
0
nng.ln67
nương 2013 lùn❤️ :
ước gì cũng đc ai đó quay tặng ☺️☺️
2026-11-11 06:12:43
0
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Load balancer. Cache. Queue. CDN. Replica. Shard. 🧠 If those sound like a pile of random buzzwords, this one's for you. Here's the secret: nobody sits down and designs a system with 9 components. You start with ONE server, and every new piece gets added because something broke. Here's the whole thing in order 👇 1️⃣ One server can't keep up → add more servers + a load balancer 2️⃣ Every server hammers the same database → add a cache (Redis) 3️⃣ Reads keep growing → add read replicas 4️⃣ One database can't hold it all → shard the data 5️⃣ Photos and videos bloat the database → move them to object storage (S3 / R2) 6️⃣ Users far away wait forever → put a CDN in front 7️⃣ Uploads make users wait on slow jobs → add a queue + background workers 8️⃣ Servers crash, regions disappear → build in redundancy 9️⃣ You can't see what's breaking → add observability (logs, metrics, traces) And the biggest beginner mistake? Adding Kafka, Kubernetes, microservices and 10 databases before you have a real problem. Every component has a cost: • caches go stale • queues deliver twice • replicas lag • shards make queries harder • microservices fail over the network So the real skill isn't memorizing tools. It's asking one question: 👉
Load balancer. Cache. Queue. CDN. Replica. Shard. 🧠 If those sound like a pile of random buzzwords, this one's for you. Here's the secret: nobody sits down and designs a system with 9 components. You start with ONE server, and every new piece gets added because something broke. Here's the whole thing in order 👇 1️⃣ One server can't keep up → add more servers + a load balancer 2️⃣ Every server hammers the same database → add a cache (Redis) 3️⃣ Reads keep growing → add read replicas 4️⃣ One database can't hold it all → shard the data 5️⃣ Photos and videos bloat the database → move them to object storage (S3 / R2) 6️⃣ Users far away wait forever → put a CDN in front 7️⃣ Uploads make users wait on slow jobs → add a queue + background workers 8️⃣ Servers crash, regions disappear → build in redundancy 9️⃣ You can't see what's breaking → add observability (logs, metrics, traces) And the biggest beginner mistake? Adding Kafka, Kubernetes, microservices and 10 databases before you have a real problem. Every component has a cost: • caches go stale • queues deliver twice • replicas lag • shards make queries harder • microservices fail over the network So the real skill isn't memorizing tools. It's asking one question: 👉 "What problem forced us to add this?" Start simple. Find the bottleneck. Add the smallest fix. Repeat. 💾 Save this for your next system design interview 💬 Which of the 9 steps did you learn the hard way? Tell me in the comments 👇 #systemdesign #softwareengineering #backenddevelopment #codinginterview #learntocode

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