@ewahmad0: #fyp

Ahmad.
Ahmad.
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Region: PK
Sunday 11 October 2026 15:00:40 GMT
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moody.stitches
MOODY STITCHES 🪡🎀🧶 :
Not everyone is justifying it they are also sometimes struggling and trying to fix everything but don't know how to you never know how much a person is mentally exhausted from the world
2026-10-13 10:08:07
0
atika_tha
🌻ThaAtiksya🇮🇩 :
Forgive forget not bcz of them but for our self .for peace of mind. About their mistake lets kifarah go to them.
2026-10-12 19:27:07
3
nobody...here1
🖤 :
Frr they even don't regret it🙃🫠
2026-10-11 21:52:42
14
freaky_ridaaa
☆ :
Peace begins with letting go🌸
2026-10-13 04:34:05
1
creative_cricket_edit
Cce¹⁸ 🐐💙🔥 :
Frr
2026-10-11 17:19:21
6
.dua.....0
𝓓.🌷 :
❤️‍🩹😭 always
2026-10-12 06:27:51
1
artistic_soul238
#Life is ART>>>❤️ :
usy ehsas he nahi k Galt kiya us na 🫠😭
2026-10-12 12:22:39
2
atiah_rahman
Atiah Rahman :
Fr playing the victim card was the worst thing they did .. 🥀
2026-10-13 14:03:36
0
noor._.e._deen.08
🥀خانی :
wow great words great thought some.peopel.did wrong with others but they show up that he didnot nothing everything is better which he has done
2026-10-12 01:30:35
2
blank_page_of_poetry
𝐇𝐞𝐚𝐫𝐭 𝐒𝐧𝐚𝐭𝐜𝐡𝐞𝐫 🥀 :
justify hi nhi hoti hin🌚
2026-10-11 18:00:40
2
brokenkhani81
brokenخانی🦋 :
Ha yrr then you don’t fogive🥹
2026-10-11 15:16:08
1
navinchand2
Navin Chand :
😍
2026-10-12 03:30:09
1
peace.368
Pious 🦋 :
Kash😔
2026-10-11 21:01:24
1
deannaadiane_official
deannaa_diane :
REAL
2026-10-13 07:11:23
0
sakeena_nathliya
Sakee♡ :
Frrrr💔
2026-10-12 10:55:16
0
maney.ijt
𓆩 ᴍᴀɴᴇʏ.ɪᴊᴛ𓆪🇵🇰 :
Hnmmm
2026-10-12 03:34:07
1
hiddenpearl021
Allah :
hmm 🙃🥺
2026-10-12 11:20:09
0
noorwrites._
نور۔ :
2026-10-12 08:33:11
0
its.me.milli
Maلaika🌸 :
frrr
2026-10-12 16:01:46
0
bexn4s1
👻 J!H4D  :
The disrespect was so loud that you wanted to forgive their mistakes. but then you realized they didn’t even regret what they did they were only looking for ways to justify it
2026-10-12 00:34:57
4
freaky_ridaaa
☆ :
the real fuckin' legacy is to leave🤌
2026-10-13 04:33:54
0
hpzzzz4
HP :
❤️‍🩹🫂
2026-10-11 18:33:46
1
duaqureshi687
✨🫀کنول✨ :
❤️‍🔥🫠
2026-10-12 09:54:46
0
rfatima711
Fatima🌷 :
😔
2026-10-12 20:45:07
0
spider1122330
L E A D E R 🍁 :
💯💯💯
2026-10-13 10:02:41
0
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Other Videos

Comment LOCK and I'll send you the cheat sheet comparing locks, atomic updates, and constraints. One ticket left. Two people click Buy at the same time. Both your screens say you got it. ⚡ The bug isn't in your checkout code, it's the gap between checking and writing. Your server reads the seat, sees available, and then, before it writes sold, does something else entirely ⚡ In that gap Leo's request runs the exact same read. It also sees available. Then both writes land, and you send two confirmation emails for one chair ⚡ This is a race condition: not a rare crash, but the ordinary outcome of two requests arriving at once. Nothing threw. Nothing warned. The database did exactly what it was asked, twice ⚡ The first fix is pessimistic locking. SELECT ... FOR UPDATE takes a row lock, and Leo's request can't even read that row until Maya's transaction commits. The queue behind it stops being optional ⚡ The second fix is better because it removes the gap entirely: fold the check into the write. UPDATE seats SET status='sold' WHERE seat='F12' AND status='available', one statement, one decision ⚡ That runs as a single atomic operation. The check and the update either both succeed or neither happens. There is no
Comment LOCK and I'll send you the cheat sheet comparing locks, atomic updates, and constraints. One ticket left. Two people click Buy at the same time. Both your screens say you got it. ⚡ The bug isn't in your checkout code, it's the gap between checking and writing. Your server reads the seat, sees available, and then, before it writes sold, does something else entirely ⚡ In that gap Leo's request runs the exact same read. It also sees available. Then both writes land, and you send two confirmation emails for one chair ⚡ This is a race condition: not a rare crash, but the ordinary outcome of two requests arriving at once. Nothing threw. Nothing warned. The database did exactly what it was asked, twice ⚡ The first fix is pessimistic locking. SELECT ... FOR UPDATE takes a row lock, and Leo's request can't even read that row until Maya's transaction commits. The queue behind it stops being optional ⚡ The second fix is better because it removes the gap entirely: fold the check into the write. UPDATE seats SET status='sold' WHERE seat='F12' AND status='available', one statement, one decision ⚡ That runs as a single atomic operation. The check and the update either both succeed or neither happens. There is no "between" left for a second request to stand in Even buggy code can't break that rule, because the constraint lives in the database, not in your code. A unique key on the event-and-seat pair means two confirmed tickets for the same seat can't physically exist in the table. The engine refuses the second insert no matter what your application does. The database never really picks a winner by magic. It forces the two requests into a line. One goes first. The other sees the result. Two rules that outlive this specific example: keep your checks inside the write, and keep the final guarantee in the schema. Which has cost you more time, the bug or the incident review after it? Comment LOCK for the full cheat sheet. #databases #concurrency #postgresql #backend #programming

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