gburnama45

Software Engineer || old account suspended

[gburnama45 @variant_vision]

@GoalpostsIDN The greatest assist of all time.

[State of Palestine @Palestine_UN]

🇵🇸 ❤️💛🇪🇸

[Dr Milan Milanović @milan_milanovic]

𝗠𝗼𝘀𝘁 𝗲𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝘀 𝗿𝗲𝗮𝗰𝗵 𝗳𝗼𝗿 𝗽𝗲𝘀𝘀𝗶𝗺𝗶𝘀𝘁𝗶𝗰 𝗹𝗼𝗰𝗸𝗶𝗻𝗴 𝗯𝘆 𝗱𝗲𝗳𝗮𝘂𝗹𝘁. 𝗙𝗼𝗿 𝗿𝗲𝗮𝗱-𝗵𝗲𝗮𝘃𝘆 𝘀𝘆𝘀𝘁𝗲𝗺𝘀, 𝘁𝗵𝗮𝘁 𝗶𝘀 𝘂𝘀𝘂𝗮𝗹𝗹𝘆 𝘁𝗵𝗲 𝘄𝗿𝗼𝗻𝗴 𝗰𝗮𝗹𝗹

Alice and Peter both read account #1 at balance 50. Each withdraws 20. Without protection, the second write lands on stale data. One withdrawal vanishes, and the balance shows 30 when it should show 10.

Two strategies stop this, and they make opposite bets.

1. 𝗢𝗽𝘁𝗶𝗺𝗶𝘀𝘁𝗶𝗰 𝗹𝗼𝗰𝗸𝗶𝗻𝗴 𝗯𝗲𝘁𝘀 𝗰𝗼𝗻𝗳𝗹𝗶𝗰𝘁𝘀 𝗮𝗿𝗲 𝗿𝗮𝗿𝗲

Nobody takes a lock. Each row carries a version number. Peter writes first, the balance drops to 30, and the version goes from 1 to 2.

When Alice writes with version 1, the database rejects her because the version moved underneath her. She re-reads, gets version 2, and retries.

JPA and Hibernate handle this with the @Version annotation.

2. 𝗣𝗲𝘀𝘀𝗶𝗺𝗶𝘀𝘁𝗶𝗰 𝗹𝗼𝗰𝗸𝗶𝗻𝗴 𝗯𝗲𝘁𝘀 𝗰𝗼𝗻𝗳𝗹𝗶𝗰𝘁𝘀 𝗮𝗿𝗲 𝗹𝗶𝗸𝗲𝗹𝘆

The first writer locks the row. Alice requests account #1 and the database locks it for her. Peter tries to edit and waits, blocked, until she commits.

The lock releases, and Peter reads the fresh balance of 30. In SQL that is SELECT ... FOR UPDATE.

The cost differs. Optimistic locking is cheap when writes rarely collide, but every conflict throws away work and forces a retry. Pessimistic locking guarantees the write, but it holds a lock, so others wait and we risk deadlocks under load.

Pick by contention. Optimistic locking fits read-heavy systems where two people rarely touch the same row, like editing a profile or a product listing. Pessimistic locking fits the cases where collisions are common and a retry costs you, like seat booking or moving money between accounts.

Most lost-update bugs trace back to the wrong bet for the traffic.

[Extra Time Indonesia @idextratime]

Innalilahi wa innailaihi raji'un 🥀

Turut berduka cita atas meninggalnya kiper Palestina, Saleem Al-Ashqar, yang berusia 32 tahun.

Ia meninggal setelah ditembak oleh pasukan Israel pada 30 Juni kemarin di jalur Gaza.

Saleem dilaporkan baru menikah 5 bulan, istrinya hamil anak pertama, dan ia sedang mencoba mendapatkan air saat kejadian tersebut terjadi.

[gburnama45 @variant_vision]

@ilalangdibukit @Ariodillahson Korupsi gak berdosa bang, langsung di bakar di neraka jahanam. Ndak bakal bisa keluar tuh orang jika orang yang terdampak Korupsi nya Ridho dia keluar dari neraka.

[gburnama45 @variant_vision]

@tootheel @isidorusss ??

[gburnama45 @variant_vision]

@mhuseinali Sini bang ingpo loker nya. Lebih takut anak istri gak makan daripada takut hantu.

[gburnama45 @variant_vision]

@handierawan Terimakasih pak insight nya.

[gburnama45 @variant_vision]

@TeknikalSaham ADMR pak, terimakasih jika berkenan analisis.

[gburnama45 @variant_vision]

@__airu___ Apa aja bang yang harus di korbankan?

[gburnama45 @variant_vision]

@CowokJangkung Kakak di PNG untuk loker IT gimana ya? Banyak kah ?

[gburnama45 @variant_vision]

@AYB_id Kok bisa ya domba" yang di gembalakan di daerah bebaruan kayak gitu bisa gemuk" , meanwhile kalau kambing / domba di Indonesia kek kurus padahal rumput disini termasuk banyak.

[Info Jateng @Jateng_Twit]

Potongan ceramah Mbah Nun (Emha Ainun Nadjib) di Klaten pada 22 Februari 2012 ini kembali viral dan terasa sangat relevan dengan situasi panas di Timur Tengah saat ini.

[Extraordinary Ustaz 👳🏾‍♂️📿 @bapphah]

Watching these people suffer, especially when it feels relentless and ignored, is heartbreaking on a level that’s hard to even put into words. Anger. Grief. Disgust. Helplessness.

Free Palestine 🇵🇸

[NADA 𓂆 @nadaa01012]

The suffering of children continues 💔
If you see this video, put a dot to break the algorithm.

[tito alba @groobaag]

860 hari.
Sendirian.
Setiap hari.
Di tengah keramaian Tokyo.

Orang Jepang ini bernama **Yusuke Furusawa**.
Dia bukan orang Palestina.
Dia bukan aktivis profesional.
Dia cuma orang biasa yang memilih untuk tidak diam.

Setiap hari setelah kerja, dia berdiri dengan plakat “Stop Gaza Genocide”.
Hujan, panas, dihina, diabaikan — dia tetap datang.
860 hari berturut-turut.

Kita di Indonesia masih banyak yang cuma scroll dan like.
Dia? Dia sudah 860 hari berdiri.

Respek.
Terima kasih, Yusuke.
Kita tidak lupa Gaza. 🇵🇸❤️

#FreePalestine
#GazaGenocide
#YusukeFurusawa
#StandWithPalestine

[State of Palestine @Palestine_UN]

Palestinian Presidency condemns Israel’s decision allowing it to classify West Bank land as a state property:

[KNEECAP @KNEECAPCEOL]

Today Israel murdered more children.

Hit with US missiles as they slept.

Israel still blocks all journalists from entering Gaza - they cannot allow the world see their barbarity.

Free Palestine

[Narasi Newsroom @NarasiNewsroom]

Di Gaza, hampir tiga ribu warga Palestina dilaporkan “lenyap” tanpa jenazah saat Israel membombardir Palestina sepanjang perang dari 7 Oktober 2023. 

Investigasi terbaru Al Jazeera menyebut, Israel menggunakan senjata berpanas ekstrem untuk menyerang Gaza dan asal senjata itu dari Amerika. 

Apa saja temuan investigasi Al Jazeera?

| Narasi Daily

[Warfare Analysis @warfareanalysis]

Children in Gaza prepare for Ramadan in displacement tents.