21 Jul 2026, 11:56 UTC45 views1 reactionsread 10 August 2026 Photo
B-tree — va bir keng tarqalgan xato
PostgreSQL va boshqa SQL bazalarda standart index turi — B-tree. Va aynan shu yerda ko'p odam adashadi: B-tree "binary tree" EMAS.
Nomidagi "B" — "binary" degani emas. Ko'pincha "balanced" yoki ixtirochisi Rudolf Bayer nomiga atab Bayer Tree deyishadi. Farqi:
• Binary tree: har tugun faqat 2 ta bolaga ega.
• B-tree: har tugun yuzlab kalit va bolaga ega bo'lishi mumkin.
Shuning …
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Signed Husan
21 Jul 2026, 05:27 UTC46 viewsread 10 August 2026 Indexsiz DB nima qiladi?
Index bo'lmasa, DB'ning boshqa iloji yo'q: u jadval (table)ni boshidan oxirigacha, qatorma-qator o'qib chiqadi. Bunga sequential scan (yoki full scan) deyiladi. 5 mln qator bo'lsa — 5 mln tekshiruv. Bu O(n): ma'lumot ikki barobar ko'paysa, qidiruv ham ikki barobar sekinlashadi.
P.S: Kichik jadvalda buni sezmaysiz. Lekin millionlab qatorda bu — soniyalarga aylanadi.
Index aslida nima?
Inde…
Signed Husan
21 Jul 2026, 05:25 UTC47 views1 reactionsread 10 August 2026 Photo
Databazada indexing: nega bir xil so'rov gohida sekundlar, gohida esa millisekundlar oladi?
Tasavvur qiling: users jadvalida 5 mln rows bor. Siz oddiy so'rov yozgansiz:
SELECT * FROM users WHERE email = ‘[email protected]’;
Bir holatda bu so'rov ~N s, boshqa holatda ~N ms’da qaytadi. Bir xil so'rov, bir xil ma'lumot va bir xil server. Farq nimada? Indexing.
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Signed Husan
Channel photo updated
30 Dec 2025, 10:59 UTC322 viewsread 10 August 2026 Photo
Maqolaga mos #meme )
@husandev
30 Dec 2025, 10:49 UTC254 views1 reactionsread 10 August 2026 Start up qilish yoki tinchgina ishga borish!
Bu yil bir nechta start up larda qatnashishga va o’zim ham start up chiqarib ko’rishga urindim. Eng yomoni start up boshlanishidagi ishtiyoq so’nib qolishida, o’ziz dissipleniyani ushlashingiz mumkin lekin bu jamoadoshilar qatnashishi kerak bo’lgan jarayonlarda to’xtab qolishingiz mumkin ekan. Yani faqat sizning harakatingiz bu yerda kamlik qiladi ekan, jamoa bilan birgal…
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22 Nov 2025, 10:06 UTC282 viewsread 10 August 2026 Forwarded from @Aloqabank_HRPhoto
🔥Ilon Mask: Kelajakda ish — majburiyat emas, tanlov bo‘ladi
2025-yil noyabrda Vashingtonda bo‘lib o‘tgan US–Saudi Investment Forum’da Ilon Mask mehnat bozori va AI rivoji bo‘yicha keskin prognozlar bildirdi. Uning aytishicha, yaqin 10–20 yil ichida:
💎 Robotlar va sun’iy intellekt ko‘pchilik ishlarni bajaradi
💎 Ishlash majburiyat emas, xohlaganlar uchun mashg‘ulotga aylanadi
💎 Pulning qadri kamayadi, chunki iqtisodi…
1 Oct 2025, 10:31 UTC297 views3 reactionsread 10 August 2026 Ustozlar kuni bilan, ustozlarni tabriklaymiz! 🎉️️️️️️
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24 Sept 2025, 13:48 UTC303 views3 reactionsread 10 August 2026 Agar sizda dasturlash uchun fundamental baza bo’lsa, bu sayt aynan siz uchun ekan.
Saytda turli xil texnalogiyalarning sintaksisi juda oson tushuntirilgan. Tezda ko’rib foydalana olasiz.
Bu kamlik qilsa quyi qismida o’rganish uchun manbalar ham keltirilgan ekan.)
👉 https://quickref.me/
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6 Sept 2025, 12:00 UTC288 views1 reactionsread 10 August 2026 Forwarded from @backendchi_blogsPhoto
Hozirgi kunda juda aktual bo'lib qolgan mavzu.
Nima bo'lsa ichiga AI tiqishyapti. U o'zi kerakmi yo'qmi farqi yo'q. Hammasi hype uchun.
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31 Aug 2025, 06:49 UTC307 views4 reactionsread 10 August 2026 Bu kunga xalq osonlik bilan erishmadi, qanchadan-qancha jadidlarimiz sho'rolar tomonidan qatag'on qilindi. Millatni ozod etish uchun ular o’z jonlarini berishdi.
Mustaqillikka erishgan kunimiz bilan. 🎉
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29 Aug 2025, 11:27 UTC238 views1 reactionsread 10 August 2026 Forwarded from @azam_mamatmurodovPhoto
🇺🇿 Python hujjatli filmi
🖥 Python tarixi haqida zo‘r hujjatli film chiqdi! Unda tilning yaratuvchisi Gvido van Rossum, NumPy asoschisi va boshqa muhim shaxslar qatnashadi.
Hikoya: oddiy hobbidan boshlangan loyiha qanday qilib deyarli yo‘qolib ketish darajasidan dunyoning eng mashhur dasturlash tiliga aylanganigacha.
Ko‘rish uchun: YouTube
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🇺🇸 Python Documentary
🖥 A fantastic documentary about …
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