{"id":36565,"date":"2025-12-19T23:40:47","date_gmt":"2025-12-19T20:40:47","guid":{"rendered":"https:\/\/fatihsoysal.com\/blog\/?p=36565"},"modified":"2025-12-19T23:40:47","modified_gmt":"2025-12-19T20:40:47","slug":"veritabaninizi-dijitaloceana-minimal-kesintiyle-tasima","status":"publish","type":"post","link":"https:\/\/fatihsoysal.com\/blog\/veritabaninizi-dijitaloceana-minimal-kesintiyle-tasima\/","title":{"rendered":"Veritaban\u0131n\u0131z\u0131 DijitalOcean’a Minimal Kesintiyle Ta\u015f\u0131ma"},"content":{"rendered":"

<\/p>\n

Veritaban\u0131n\u0131z\u0131 DijitalOcean’a Minimal Kesintiyle Ta\u015f\u0131ma<\/h2>\n

Veritabanlar\u0131, modern uygulamalar\u0131n ve i\u015fletmelerin kalbidir. Performans, g\u00fcvenilirlik ve \u00f6l\u00e7eklenebilirlik, bir veritaban\u0131 altyap\u0131s\u0131 i\u00e7in hayati \u00f6neme sahiptir. Bulut platformlar\u0131na ge\u00e7i\u015f, bu gereksinimleri kar\u015f\u0131lamak ve operasyonel maliyetleri d\u00fc\u015f\u00fcrmek i\u00e7in pop\u00fcler bir stratejidir. DijitalOcean, geli\u015ftirici dostu aray\u00fcz\u00fc, uygun maliyetli \u00e7\u00f6z\u00fcmleri ve g\u00fc\u00e7l\u00fc y\u00f6netilen veritaban\u0131 hizmetleri ile bu ge\u00e7i\u015f i\u00e7in cazip bir se\u00e7enek sunar. Ancak, mevcut bir veritaban\u0131n\u0131 yeni bir ortama ta\u015f\u0131mak, \u00f6zellikle “minimal kesinti” hedefiyle, dikkatli planlama ve do\u011fru stratejiler gerektiren karma\u015f\u0131k bir s\u00fcre\u00e7tir.<\/p>\n

Bu makalede, veritaban\u0131n\u0131z\u0131 DijitalOcean’a nas\u0131l ta\u015f\u0131yaca\u011f\u0131n\u0131z\u0131, \u00f6zellikle kesinti s\u00fcresini en aza indirerek bu s\u00fcreci nas\u0131l y\u00f6netece\u011finizi ayr\u0131nt\u0131l\u0131 olarak ele alaca\u011f\u0131z. PostgreSQL ve MySQL gibi yayg\u0131n veritaban\u0131 sistemleri i\u00e7in pratik ad\u0131mlar, en iyi uygulamalar ve kar\u015f\u0131la\u015f\u0131labilecek olas\u0131 zorluklar \u00fczerinde duraca\u011f\u0131z.<\/p>\n

Neden DijitalOcean ve Neden Minimal Kesinti?<\/h3>\n

DijitalOcean, geli\u015ftiricilere ve k\u00fc\u00e7\u00fck\/orta \u00f6l\u00e7ekli i\u015fletmelere y\u00f6nelik basit, g\u00fc\u00e7l\u00fc ve uygun maliyetli bulut altyap\u0131s\u0131 sunar. Y\u00f6netilen Veritaban\u0131 hizmetleri (Managed Databases), veritaban\u0131 y\u00f6netimiyle ilgili bir\u00e7ok operasyonel y\u00fck\u00fc (yedekleme, yamalama, \u00f6l\u00e7eklendirme, y\u00fcksek eri\u015filebilirlik) ortadan kald\u0131rarak geli\u015ftiricilerin ana i\u015flerine odaklanmas\u0131n\u0131 sa\u011flar.<\/p>\n

* \u00d6l\u00e7eklenebilirlik:<\/strong> \u0130htiya\u00e7 duydu\u011funuzda kolayca kaynaklar\u0131 art\u0131rabilir veya azaltabilirsiniz.
\n* Y\u00fcksek Eri\u015filebilirlik:<\/strong> Y\u00f6netilen veritabanlar\u0131, otomatik failover ve yedekleme ile y\u00fcksek eri\u015filebilirlik sunar.
\n* Basit Y\u00f6netim:<\/strong> Altyap\u0131 y\u00f6netimi y\u00fck\u00fcn\u00fc DijitalOcean’a b\u0131rakarak operasyonel verimlili\u011fi art\u0131r\u0131rs\u0131n\u0131z.
\n* Maliyet Etkinli\u011fi:<\/strong> Genellikle benzer hizmetlere g\u00f6re daha uygun fiyatl\u0131d\u0131r.
\n* Entegrasyon:<\/strong> DijitalOcean ekosistemi i\u00e7inde di\u011fer hizmetlerle kolayca entegre edilebilir.<\/p>\n

Veritaban\u0131 ta\u015f\u0131ma s\u0131ras\u0131nda “minimal kesinti” hedefi ise, modern i\u015f d\u00fcnyas\u0131nda kritik bir gerekliliktir. Uygulamalar\u0131n 7\/24 \u00e7al\u0131\u015fmas\u0131 beklenir ve her dakikal\u0131k kesinti, gelir kayb\u0131na, m\u00fc\u015fteri memnuniyetsizli\u011fine ve marka itibar\u0131 zarar\u0131na yol a\u00e7abilir. Bu nedenle, ta\u015f\u0131ma s\u00fcrecini m\u00fcmk\u00fcn oldu\u011funca sorunsuz ve kullan\u0131c\u0131lar i\u00e7in fark edilmez k\u0131lmak esast\u0131r.<\/p>\n

DijitalOcean Veritaban\u0131 Tekliflerini Anlamak<\/h3>\n

DijitalOcean, veritaban\u0131 ihtiya\u00e7lar\u0131n\u0131z i\u00e7in iki ana yakla\u015f\u0131m sunar:<\/p>\n

Y\u00f6netilen Veritabanlar\u0131 (Managed Databases)<\/h4>\n

Bu, \u00e7o\u011fu kullan\u0131c\u0131 i\u00e7in tercih edilen se\u00e7enektir. DijitalOcean, PostgreSQL, MySQL, Redis ve MongoDB i\u00e7in y\u00f6netilen hizmetler sunar. Bu hizmetler, veritaban\u0131 altyap\u0131s\u0131n\u0131n kurulumu, bak\u0131m\u0131, yedeklenmesi, \u00f6l\u00e7eklenmesi ve y\u00fcksek eri\u015filebilirli\u011finin sa\u011flanmas\u0131 gibi g\u00f6revleri DijitalOcean’\u0131n \u00fcstlenmesi anlam\u0131na gelir.<\/p>\n

* Avantajlar\u0131:<\/strong> Otomatik yedeklemeler, kolay \u00f6l\u00e7eklendirme, otomatik failover ile y\u00fcksek eri\u015filebilirlik, g\u00fcvenlik yamalar\u0131, izleme ve daha az operasyonel y\u00fck.
\n* Dezavantajlar\u0131:<\/strong> Veritaban\u0131 yap\u0131land\u0131rmas\u0131 \u00fczerinde tam kontrol eksikli\u011fi (baz\u0131 sunucu parametreleri k\u0131s\u0131tlanabilir), belirli veritaban\u0131 s\u00fcr\u00fcmleriyle s\u0131n\u0131rl\u0131 olma.<\/p>\n

Droplet \u00dczerinde Kendi Kendine Y\u00f6netilen Veritabanlar\u0131<\/h4>\n

Bir Droplet (sanal sunucu) olu\u015fturup \u00fczerine istedi\u011finiz veritaban\u0131n\u0131 (\u00f6rne\u011fin, MongoDB, Cassandra, kendi \u00f6zel yap\u0131land\u0131rman\u0131zda PostgreSQL\/MySQL) kurup y\u00f6netebilirsiniz.<\/p>\n

* Avantajlar\u0131:<\/strong> Tam kontrol ve esneklik, \u00f6zel yap\u0131land\u0131rmalara izin verir.
\n* Dezavantajlar\u0131:<\/strong> T\u00fcm y\u00f6netim, yedekleme, g\u00fcvenlik ve y\u00fcksek eri\u015filebilirlik sorumlulu\u011fu size aittir. Bu, \u00f6nemli bir operasyonel y\u00fck anlam\u0131na gelir.<\/p>\n

Minimal kesintiyle ta\u015f\u0131ma hedefi i\u00e7in, genellikle DijitalOcean Y\u00f6netilen Veritabanlar\u0131 daha uygundur \u00e7\u00fcnk\u00fc hedef ortam\u0131n g\u00fcvenilirli\u011fi ve performans\u0131 DijitalOcean taraf\u0131ndan garanti edilir.<\/p>\n

Ta\u015f\u0131ma \u00d6ncesi Planlama: Ba\u015far\u0131n\u0131n Anahtar\u0131<\/h3>\n

Her ba\u015far\u0131l\u0131 ta\u015f\u0131man\u0131n temelinde kapsaml\u0131 bir planlama yatar. Bu a\u015fama, kesinti s\u00fcresini en aza indirme hedefine ula\u015fmak i\u00e7in hayati \u00f6neme sahiptir.<\/p>\n

1. Mevcut Veritaban\u0131 De\u011ferlendirmesi<\/h4>\n

* Veritaban\u0131 T\u00fcr\u00fc ve S\u00fcr\u00fcm\u00fc:<\/strong> Mevcut veritaban\u0131n\u0131z\u0131n (PostgreSQL, MySQL vb.) tam s\u00fcr\u00fcm\u00fcn\u00fc belirleyin. DijitalOcean Y\u00f6netilen Veritabanlar\u0131 belirli s\u00fcr\u00fcmleri destekler; uyumlulu\u011fu kontrol edin.
\n* Boyut ve B\u00fcy\u00fcme H\u0131z\u0131:<\/strong> Veritaban\u0131n\u0131n disk \u00fczerindeki boyutu, index boyutlar\u0131 ve g\u00fcnl\u00fck b\u00fcy\u00fcme h\u0131z\u0131, ta\u015f\u0131ma s\u00fcresi ve hedef kaynak gereksinimlerini belirleyecektir.
\n* \u015eema Karma\u015f\u0131kl\u0131\u011f\u0131:<\/strong> Karma\u015f\u0131k \u015femalar, \u00f6zel fonksiyonlar, tetikleyiciler, stored procedure’ler ve g\u00f6r\u00fcn\u00fcmlerin uyumlulu\u011funu kontrol edin.
\n* Ba\u011f\u0131ml\u0131l\u0131klar:<\/strong> Veritaban\u0131n\u0131za ba\u011fl\u0131 uygulamalar, hizmetler, ETL s\u00fcre\u00e7leri ve di\u011fer veritabanlar\u0131n\u0131n bir listesini \u00e7\u0131kar\u0131n. Ta\u015f\u0131ma sonras\u0131 ba\u011flant\u0131 dizgilerini g\u00fcncellemeniz gerekecek.
\n* Performans Metrikleri:<\/strong> Mevcut veritaban\u0131n\u0131z\u0131n CPU, bellek, disk I\/O ve sorgu yan\u0131t s\u00fcreleri gibi temel performans metriklerini kaydedin. Bu, ta\u015f\u0131ma sonras\u0131 performans\u0131 kar\u015f\u0131la\u015ft\u0131rmak i\u00e7in bir referans noktas\u0131 olacakt\u0131r.<\/p>\n

2. Uyumluluk Kontrol\u00fc<\/h4>\n

* S\u00fcr\u00fcm Uyumlulu\u011fu:<\/strong> DijitalOcean Managed Databases, belirli veritaban\u0131 s\u00fcr\u00fcmlerini destekler. Mevcut veritaban\u0131 s\u00fcr\u00fcm\u00fcn\u00fcz\u00fcn, DijitalOcean’\u0131n destekledi\u011fi s\u00fcr\u00fcmlerden biriyle uyumlu oldu\u011fundan veya kolayca y\u00fckseltilebilece\u011finden emin olun.
\n* \u00d6zel Yap\u0131land\u0131rmalar:<\/strong> Mevcut veritaban\u0131n\u0131zda \u00f6zel sunucu yap\u0131land\u0131rmalar\u0131 varsa, bunlar\u0131n DijitalOcean Y\u00f6netilen Veritabanlar\u0131 \u00fczerinde uygulanabilir olup olmad\u0131\u011f\u0131n\u0131 kontrol edin. Baz\u0131 parametreler de\u011fi\u015ftirilemeyebilir.<\/p>\n

3. Kesinti S\u00fcresi Tolerans\u0131 ve Geri D\u00f6n\u00fc\u015f Plan\u0131<\/h4>\n

* Kesinti Penceresi:<\/strong> Uygulaman\u0131z\u0131n ve kullan\u0131c\u0131lar\u0131n\u0131z\u0131n ne kadar kesintiye dayanabilece\u011fini belirleyin. Bu, ta\u015f\u0131ma stratejinizi \u015fekillendirecektir.
\n* Geri D\u00f6n\u00fc\u015f Plan\u0131 (Rollback Plan\u0131):<\/strong> Her ta\u015f\u0131ma i\u015flemi risk ta\u015f\u0131r. Bir \u015feyler ters giderse, mevcut veritaban\u0131n\u0131za sorunsuz bir \u015fekilde geri d\u00f6nebilece\u011finiz net bir plan\u0131n\u0131z olmal\u0131d\u0131r. Bu, mevcut veritaban\u0131n\u0131n ta\u015f\u0131ma tamamlanana kadar dokunulmadan kalmas\u0131n\u0131 ve son bir yede\u011finin al\u0131nmas\u0131n\u0131 i\u00e7erir.<\/p>\n

4. A\u011f ve G\u00fcvenlik Yap\u0131land\u0131rmas\u0131<\/h4>\n

* VPC (Virtual Private Cloud):<\/strong> Uygulamalar\u0131n\u0131z DijitalOcean \u00fczerinde \u00e7al\u0131\u015f\u0131yorsa, y\u00f6netilen veritaban\u0131n\u0131z\u0131 ayn\u0131 VPC i\u00e7inde olu\u015fturarak g\u00fcvenli ve d\u00fc\u015f\u00fck gecikmeli \u00f6zel a\u011f ba\u011flant\u0131s\u0131 sa\u011flay\u0131n.
\n* G\u00fcvenlik Duvar\u0131 Kurallar\u0131:<\/strong> DijitalOcean y\u00f6netilen veritabanlar\u0131 varsay\u0131lan olarak t\u00fcm gelen ba\u011flant\u0131lar\u0131 engeller. Veritaban\u0131na eri\u015fmesi gereken Droplet’lerin veya yerel IP adreslerinin g\u00fcvenlik duvar\u0131 kurallar\u0131na eklenmesi gerekir.
\n* Kullan\u0131c\u0131 ve \u0130zinler:<\/strong> Ta\u015f\u0131ma i\u00e7in gerekli kullan\u0131c\u0131lar\u0131 ve minimum yetkilendirme prensibiyle gerekli izinleri olu\u015fturun.<\/p>\n

5. Yedekleme Stratejisi<\/h4>\n

Ta\u015f\u0131ma i\u015flemine ba\u015flamadan \u00f6nce mevcut veritaban\u0131n\u0131z\u0131n tam ve g\u00fcvenilir bir yede\u011fini ald\u0131\u011f\u0131n\u0131zdan emin olun. Bu yedek, herhangi bir aksilik durumunda son \u00e7are olacakt\u0131r.<\/p>\n

Minimal Kesintiyle Ta\u015f\u0131ma Stratejileri<\/h3>\n

Minimal kesintiyle veritaban\u0131 ta\u015f\u0131mas\u0131 i\u00e7in birka\u00e7 ana strateji bulunmaktad\u0131r. Se\u00e7im, veritaban\u0131n\u0131n boyutu, karma\u015f\u0131kl\u0131\u011f\u0131, kesinti tolerans\u0131 ve mevcut altyap\u0131n\u0131z\u0131n \u00f6zelliklerine ba\u011fl\u0131d\u0131r.<\/p>\n

1. Mant\u0131ksal Ta\u015f\u0131ma (Dump\/Restore)<\/h4>\n

Bu, en basit ta\u015f\u0131ma y\u00f6ntemidir ve genellikle k\u00fc\u00e7\u00fck ila orta \u00f6l\u00e7ekli veritabanlar\u0131 i\u00e7in veya belirli bir kesinti s\u00fcresinin kabul edilebilir oldu\u011fu durumlarda kullan\u0131l\u0131r.<\/p>\n

* Nas\u0131l \u00c7al\u0131\u015f\u0131r:<\/strong> Mevcut veritaban\u0131n\u0131n t\u00fcm verileri ve \u015femas\u0131 bir dosyaya (dump) yedeklenir, ard\u0131ndan bu dosya hedef DijitalOcean veritaban\u0131na geri y\u00fcklenir.
\n* Ara\u00e7lar:<\/strong> PostgreSQL i\u00e7in pg_dump<\/code> ve pg_restore<\/code>, MySQL i\u00e7in mysqldump<\/code> ve mysql<\/code> komut sat\u0131r\u0131 ara\u00e7lar\u0131 kullan\u0131l\u0131r.
\n* Kesinti S\u00fcresi:<\/strong> Veritaban\u0131 dump al\u0131n\u0131rken (\u00f6zellikle mysqldump<\/code> ile okuma kilitleri al\u0131nd\u0131\u011f\u0131nda) veya restore edilirken yazma i\u015flemleri durdurulmal\u0131d\u0131r. Bu, veritaban\u0131n\u0131n bu s\u00fcre boyunca \u00e7evrimd\u0131\u015f\u0131 olaca\u011f\u0131 anlam\u0131na gelir. B\u00fcy\u00fck veritabanlar\u0131 i\u00e7in bu s\u00fcre uzayabilir.<\/p>\n

Ad\u0131mlar:<\/strong>
\n1. Yazma \u0130\u015flemlerini Durdurun:<\/strong> Uygulamalar\u0131n\u0131z\u0131n mevcut veritaban\u0131na yazmas\u0131n\u0131 ge\u00e7ici olarak durdurun.
\n2. Veritaban\u0131n\u0131 Yedekleyin (Dump):<\/strong>
\n * PostgreSQL:<\/strong> pg_dump -Fc -v -h-U -d > backup.dump<\/code>
\n * MySQL:<\/strong> mysqldump -h-u -p > backup.sql<\/code>
\n3. Yedek Dosyas\u0131n\u0131 DijitalOcean’a Aktar\u0131n:<\/strong> scp<\/code> veya rsync<\/code> gibi ara\u00e7larla yedek dosyas\u0131n\u0131 DijitalOcean’da bir Droplet’e veya do\u011frudan Managed Database eri\u015fimi olan bir makineye ta\u015f\u0131y\u0131n.
\n4. DijitalOcean Veritaban\u0131n\u0131 Haz\u0131rlay\u0131n:<\/strong> Yeni bir Managed Database olu\u015fturun ve gerekli kullan\u0131c\u0131lar\u0131\/izinleri ayarlay\u0131n.
\n5. Yede\u011fi Geri Y\u00fckleyin (Restore):<\/strong>
\n * PostgreSQL:<\/strong> pg_restore -v -h -U -d backup.dump<\/code>
\n * MySQL:<\/strong> mysql -h -u -p < backup.sql<\/code>
\n6. Uygulama Ba\u011flant\u0131lar\u0131n\u0131 G\u00fcncelleyin:<\/strong> Uygulamalar\u0131n\u0131z\u0131n veritaban\u0131 ba\u011flant\u0131 dizgilerini yeni DijitalOcean veritaban\u0131na i\u015faret edecek \u015fekilde g\u00fcncelleyin.
\n7. Uygulamalar\u0131 Ba\u015flat\u0131n:<\/strong> Uygulamalar\u0131n\u0131z\u0131 tekrar \u00e7evrimi\u00e7i hale getirin.<\/p>\n

2. Replikasyon Tabanl\u0131 Ta\u015f\u0131ma (Minimal Kesinti \u0130\u00e7in En \u0130yi Se\u00e7enek)<\/h4>\n

Bu strateji, mevcut veritaban\u0131n\u0131z ile yeni DijitalOcean veritaban\u0131 aras\u0131nda s\u00fcrekli veri senkronizasyonu (replikasyon) kurarak kesinti s\u00fcresini saniyelerle s\u0131n\u0131rlamay\u0131 ama\u00e7lar. Bu, \u00f6zellikle b\u00fcy\u00fck ve s\u00fcrekli \u00e7al\u0131\u015fan veritabanlar\u0131 i\u00e7in idealdir.<\/p>\n

* Nas\u0131l \u00c7al\u0131\u015f\u0131r:<\/strong> Mevcut veritaban\u0131 (kaynak), birincil (primary) sunucu g\u00f6revi g\u00f6r\u00fcrken, DijitalOcean veritaban\u0131 ikincil (replica) sunucu olarak yap\u0131land\u0131r\u0131l\u0131r. Kaynaktaki t\u00fcm de\u011fi\u015fiklikler ger\u00e7ek zamanl\u0131 olarak replikaya aktar\u0131l\u0131r. Veriler tamamen senkronize oldu\u011funda, uygulamalar yeni veritaban\u0131na y\u00f6nlendirilir (cutover).
\n* Ara\u00e7lar\/Teknikler:<\/strong>
\n * PostgreSQL:<\/strong> Mant\u0131ksal replikasyon (Logical Replication), PostgreSQL 10 ve \u00fczeri s\u00fcr\u00fcmlerde yerle\u015fik olarak bulunur. Daha eski s\u00fcr\u00fcmler i\u00e7in pglogical<\/code> gibi uzant\u0131lar kullan\u0131labilir.
\n * MySQL:<\/strong> Binlog replikasyonu (Binary Log Replication).
\n* Kesinti S\u00fcresi:<\/strong> Yaln\u0131zca cutover (ge\u00e7i\u015f) an\u0131nda, yani uygulamalar\u0131n eski veritaban\u0131ndan yeniye y\u00f6nlendirildi\u011fi k\u0131sa s\u00fcre boyunca. Bu genellikle birka\u00e7 saniye veya dakika s\u00fcrer.<\/p>\n

Genel Ad\u0131mlar:<\/strong>
\n1. DijitalOcean Veritaban\u0131n\u0131 Haz\u0131rlay\u0131n:<\/strong> Yeni bir Managed Database olu\u015fturun. Gerekli kullan\u0131c\u0131lar\u0131 ve g\u00fcvenlik duvar\u0131 kurallar\u0131n\u0131 yap\u0131land\u0131r\u0131n.
\n2. Kaynak Veritaban\u0131n\u0131 Replikasyon \u0130\u00e7in Yap\u0131land\u0131r\u0131n:<\/strong>
\n * PostgreSQL:<\/strong> postgresql.conf<\/code> dosyas\u0131nda wal_level = logical<\/code> ayar\u0131n\u0131 etkinle\u015ftirin ve sunucuyu yeniden ba\u015flat\u0131n. Replikasyon i\u00e7in \u00f6zel bir kullan\u0131c\u0131 olu\u015fturun.
\n * MySQL:<\/strong> my.cnf<\/code> dosyas\u0131nda log_bin<\/code>, server_id<\/code> ve log_slave_updates<\/code> ayarlar\u0131n\u0131 etkinle\u015ftirin ve sunucuyu yeniden ba\u015flat\u0131n. Replikasyon i\u00e7in \u00f6zel bir kullan\u0131c\u0131 olu\u015fturun.
\n3. Ba\u015flang\u0131\u00e7 Veri Y\u00fcklemesi:<\/strong> Kaynak veritaban\u0131ndan bir \"point-in-time\" yede\u011fi al\u0131n (\u00f6rne\u011fin, pg_dump<\/code> veya mysqldump<\/code>). Bu yede\u011fi DijitalOcean veritaban\u0131na geri y\u00fckleyin. Bu yedek al\u0131n\u0131rken kaynak veritaban\u0131nda yazma i\u015flemleri devam edebilir, ancak yedekleme an\u0131ndaki tutarl\u0131 bir anl\u0131k g\u00f6r\u00fcnt\u00fc elde etmek i\u00e7in dikkatli olunmal\u0131d\u0131r.
\n4. Replikasyonu Kurun:<\/strong>
\n * PostgreSQL (Mant\u0131ksal Replikasyon):<\/strong> Kaynakta bir \"PUBLICATION\" olu\u015fturun ve DijitalOcean veritaban\u0131nda bu yay\u0131na abone olan bir \"SUBSCRIPTION\" olu\u015fturun.
\n * MySQL (Binlog Replikasyonu):<\/strong> Kaynak veritaban\u0131ndan SHOW MASTER STATUS<\/code> ile binlog konumunu al\u0131n. DijitalOcean veritaban\u0131nda CHANGE MASTER TO<\/code> komutunu kullanarak replikasyonu ba\u015flat\u0131n.
\n5. Replikasyonu \u0130zleyin:<\/strong> Replikasyon gecikmesini (lag) s\u00fcrekli olarak izleyin. Gecikme s\u0131f\u0131ra yakla\u015ft\u0131\u011f\u0131nda veya tamamen s\u0131f\u0131r oldu\u011funda cutover i\u00e7in haz\u0131r olursunuz.
\n * PostgreSQL:<\/strong> pg_stat_replication<\/code> tablosunu kontrol edin.
\n * MySQL:<\/strong> SHOW SLAVE STATUS<\/code> komutunu kullan\u0131n.
\n6. Cutover (Ge\u00e7i\u015f):<\/strong>
\n * Yazma \u0130\u015flemlerini Durdurun:<\/strong> Uygulamalar\u0131n\u0131z\u0131n mevcut veritaban\u0131na yazmas\u0131n\u0131 k\u0131sa bir s\u00fcre i\u00e7in durdurun.
\n * Replikasyon Gecikmesini Kontrol Edin:<\/strong> Replikasyonun tamamen yakalad\u0131\u011f\u0131ndan ve gecikmenin s\u0131f\u0131r oldu\u011fundan emin olun.
\n * Uygulama Ba\u011flant\u0131lar\u0131n\u0131 G\u00fcncelleyin:<\/strong> Uygulamalar\u0131n veritaban\u0131 ba\u011flant\u0131 dizgilerini yeni DijitalOcean veritaban\u0131na i\u015faret edecek \u015fekilde de\u011fi\u015ftirin.
\n * Uygulamalar\u0131 Ba\u015flat\u0131n:<\/strong> Uygulamalar\u0131 yeni veritaban\u0131yla tekrar \u00e7evrimi\u00e7i hale getirin.
\n7. Eski Veritaban\u0131n\u0131 Devre D\u0131\u015f\u0131 B\u0131rak\u0131n:<\/strong> Yeni veritaban\u0131n\u0131n stabil \u00e7al\u0131\u015ft\u0131\u011f\u0131ndan ve t\u00fcm verilerin do\u011fru oldu\u011fundan emin olduktan sonra eski veritaban\u0131n\u0131 kapatabilir veya ar\u015fivleyebilirsiniz.<\/p>\n

\u00d6rnek: PostgreSQL Mant\u0131ksal Replikasyon Ad\u0131mlar\u0131 (Daha Detayl\u0131)<\/strong><\/p>\n

1. Kaynak PostgreSQL Yap\u0131land\u0131rmas\u0131 (postgresql.conf):<\/strong><\/p>\n

wal_level = logical\n    max_replication_slots = 10  # Yeterli slot oldu\u011fundan emin olun\n    max_wal_senders = 10        # Yeterli sender oldu\u011fundan emin olun<\/code><\/pre>\n
    Bu de\u011fi\u015fikliklerden sonra PostgreSQL'i yeniden ba\u015flat\u0131n.
\n2.  Kaynak PostgreSQL'de Replikasyon Kullan\u0131c\u0131s\u0131 Olu\u015fturma:<\/strong><\/p>\n
CREATE USER replication_user WITH REPLICATION ENCRYPTED PASSWORD 'your_secure_password';<\/code><\/pre>\n
3.  Kaynak PostgreSQL'de pg_hba.conf<\/code> G\u00fcncelleme:<\/strong>
\n    DijitalOcean veritaban\u0131n\u0131z\u0131n IP adresinden veya Droplet IP'sinden gelen ba\u011flant\u0131lara izin verin.<\/p>\n
host    replication     replication_user    \/32      md5<\/code><\/pre>\n
    pg_hba.conf<\/code> dosyas\u0131n\u0131 yeniden y\u00fckleyin (pg_ctl reload<\/code> veya servis yeniden ba\u015flatma).
\n4.  Kaynak PostgreSQL'de Publication Olu\u015fturma:<\/strong><\/p>\n
CREATE PUBLICATION my_publication FOR ALL TABLES;\n    -- Veya belirli tablolar i\u00e7in:\n    -- CREATE PUBLICATION my_publication FOR TABLE table1, table2;<\/code><\/pre>\n
5.  DijitalOcean PostgreSQL Veritaban\u0131n\u0131 Haz\u0131rlama:<\/strong>
\n    DijitalOcean kontrol panelinden Managed PostgreSQL veritaban\u0131 olu\u015fturun. G\u00fcvenlik duvar\u0131 kurallar\u0131n\u0131 ayarlay\u0131n ve kaynak veritaban\u0131n\u0131z\u0131n IP adresinden gelen ba\u011flant\u0131lara izin verin.
\n6.  Ba\u015flang\u0131\u00e7 Veri Y\u00fcklemesi:<\/strong>
\n    Kaynak veritaban\u0131ndan \u015fema ve veri yede\u011fi al\u0131n:<\/p>\n
pg_dump -h  -U  -Fc -d  > initial_dump.dump<\/code><\/pre>\n
    Yede\u011fi DijitalOcean veritaban\u0131na geri y\u00fckleyin:<\/p>\n
pg_restore -h  -U  -d  -Fc initial_dump.dump<\/code><\/pre>\n
7.  DijitalOcean PostgreSQL'de Subscription Olu\u015fturma:<\/strong>
\n    DijitalOcean veritaban\u0131na ba\u011flanarak:<\/p>\n
CREATE SUBSCRIPTION my_subscription\n    CONNECTION 'host= port=5432 user=replication_user password=your_secure_password dbname='\n    PUBLICATION my_publication;<\/code><\/pre>\n
8.  Replikasyonu \u0130zleme:<\/strong>
\n    DijitalOcean veritaban\u0131nda SELECT * FROM pg_stat_replication;<\/code> sorgusunu \u00e7al\u0131\u015ft\u0131rarak replikasyon durumunu kontrol edin. client_addr<\/code> kaynak sunucunuz olmal\u0131 ve state<\/code> genellikle streaming<\/code> olmal\u0131d\u0131r. Replikasyon gecikmesi i\u00e7in pg_stat_subscription<\/code> tablosunu da kontrol edebilirsiniz.
\n9.  Cutover:<\/strong>
\n    Yukar\u0131daki genel cutover ad\u0131mlar\u0131n\u0131 takip edin.<\/p>\n
3. Uygulama Seviyesinde Ta\u015f\u0131ma (Daha Karma\u015f\u0131k)<\/h4>\n
Bu y\u00f6ntem, genellikle uygulama kodunda de\u011fi\u015fiklikler gerektiren ve \u00e7ok \u00f6zel durumlarda kullan\u0131lan daha geli\u015fmi\u015f bir stratejidir.<\/p>\n
*   \u00c7ift Yazma (Dual Write):<\/strong> Uygulama, hem eski hem de yeni veritaban\u0131na ayn\u0131 anda yazar. Bu, verilerin her iki veritaban\u0131nda da g\u00fcncel kalmas\u0131n\u0131 sa\u011flar. Belirli bir s\u00fcre sonra, okuma i\u015flemleri de yeni veritaban\u0131na y\u00f6nlendirilir.
\n*   Veritaban\u0131 Proxy'si:<\/strong> Bir veritaban\u0131 proxy'si (\u00f6rne\u011fin, PgBouncer, ProxySQL) kullanarak trafi\u011fi kademeli olarak yeni veritaban\u0131na y\u00f6nlendirebilirsiniz.<\/p>\n
Bu y\u00f6ntemler, s\u0131f\u0131ra yak\u0131n kesinti s\u00fcresi sunabilir ancak uygulama mimarisinde \u00f6nemli de\u011fi\u015fiklikler ve daha y\u00fcksek karma\u015f\u0131kl\u0131k gerektirir. \u00c7o\u011fu senaryo i\u00e7in replikasyon tabanl\u0131 ta\u015f\u0131ma yeterli olacakt\u0131r.<\/p>\n
Ta\u015f\u0131ma Sonras\u0131 Ad\u0131mlar ve Optimizasyon<\/h3>\n
Ta\u015f\u0131ma tamamland\u0131ktan sonra i\u015finiz bitmez. Yeni ortam\u0131n beklendi\u011fi gibi \u00e7al\u0131\u015ft\u0131\u011f\u0131ndan emin olmak ve performans\u0131 optimize etmek i\u00e7in ek ad\u0131mlar atman\u0131z gerekir.<\/p>\n
1. Do\u011frulama ve Test<\/h4>\n
*   Veri B\u00fct\u00fcnl\u00fc\u011f\u00fc Kontrol\u00fc:<\/strong> Ta\u015f\u0131ma sonras\u0131 veritabanlar\u0131ndaki veri say\u0131s\u0131n\u0131 kar\u015f\u0131la\u015ft\u0131r\u0131n ve rastgele \u00f6rneklemelerle veri b\u00fct\u00fcnl\u00fc\u011f\u00fcn\u00fc do\u011frulay\u0131n. CRC32 veya hash fonksiyonlar\u0131 kullan\u0131larak tablolar\u0131n kar\u015f\u0131la\u015ft\u0131r\u0131lmas\u0131 da yap\u0131labilir.
\n*   Uygulama \u0130\u015flevselli\u011fi Testi:<\/strong> T\u00fcm uygulama \u00f6zelliklerinin yeni veritaban\u0131yla do\u011fru \u00e7al\u0131\u015ft\u0131\u011f\u0131n\u0131 kapsaml\u0131 bir \u015fekilde test edin.
\n*   Performans Kar\u015f\u0131la\u015ft\u0131rmas\u0131:<\/strong> Ta\u015f\u0131ma \u00f6ncesi kaydetti\u011finiz performans metrikleriyle (CPU, bellek, disk I\/O, sorgu yan\u0131t s\u00fcreleri) yeni ortam\u0131n performans\u0131n\u0131 kar\u015f\u0131la\u015ft\u0131r\u0131n.<\/p>\n
2. Performans Ayarlamalar\u0131<\/h4>\n
*   \u0130ndeksleme:<\/strong> Eksik veya verimsiz indeksleri belirleyin ve ekleyin.
\n*   Sorgu Optimizasyonu:<\/strong> Yava\u015f \u00e7al\u0131\u015fan sorgular\u0131 tespit edin ve optimize edin.
\n*   Veritaban\u0131 Parametreleri:<\/strong> DijitalOcean Y\u00f6netilen Veritabanlar\u0131 i\u00e7in \u00f6zel yap\u0131land\u0131rma parametreleri mevcuttur. Bellek ayarlar\u0131, ba\u011flant\u0131 limitleri gibi parametreleri uygulaman\u0131z\u0131n ihtiya\u00e7lar\u0131na g\u00f6re ayarlay\u0131n.
\n*   Kaynak \u00d6l\u00e7eklendirme:<\/strong> Gerekirse DijitalOcean kontrol panelinden veritaban\u0131 k\u00fcmenizin CPU, bellek veya disk boyutunu art\u0131r\u0131n.<\/p>\n
3. \u0130zleme ve Uyar\u0131lar<\/h4>\n
*   DijitalOcean Monitoring:<\/strong> DijitalOcean, CPU kullan\u0131m\u0131, disk I\/O, ba\u011flant\u0131 say\u0131s\u0131 gibi temel veritaban\u0131 metriklerini izlemenizi sa\u011flar.
\n*   \u00d6zel Uyar\u0131lar:<\/strong> Belirli e\u015fik de\u011ferleri a\u015f\u0131ld\u0131\u011f\u0131nda (\u00f6rne\u011fin, CPU %80'in \u00fczerine \u00e7\u0131kt\u0131\u011f\u0131nda, disk alan\u0131 %90 doldu\u011funda) bildirim alacak \u015fekilde uyar\u0131lar ayarlay\u0131n.
\n*   Log Y\u00f6netimi:<\/strong> Veritaban\u0131 loglar\u0131n\u0131 d\u00fczenli olarak kontrol edin ve anormallikleri takip edin.<\/p>\n
4. Yedekleme ve Kurtarma Plan\u0131<\/h4>\n
*   DijitalOcean Y\u00f6netilen Veritabanlar\u0131 otomatik g\u00fcnl\u00fck yedeklemeler sunar. Bu yedeklemelerin \u00e7al\u0131\u015ft\u0131\u011f\u0131n\u0131 do\u011frulay\u0131n.
\n*   Bir felaket kurtarma senaryosu (\u00f6rne\u011fin, veritaban\u0131n\u0131n silinmesi) i\u00e7in kurtarma plan\u0131n\u0131z\u0131 test edin. Bir yede\u011fi geri y\u00fcklemeyi deneyerek s\u00fcrecin \u00e7al\u0131\u015ft\u0131\u011f\u0131ndan emin olun.<\/p>\n
5. G\u00fcvenlik \u0130ncelemesi<\/h4>\n
*   Kullan\u0131c\u0131 izinlerini g\u00f6zden ge\u00e7irin ve en az ayr\u0131cal\u0131k prensibine uydu\u011fundan emin olun.
\n*   Gerekli olmayan kullan\u0131c\u0131lar\u0131 kald\u0131r\u0131n.
\n*   A\u011f g\u00fcvenlik duvar\u0131 kurallar\u0131n\u0131n hala uygun oldu\u011funu ve gereksiz eri\u015fimlere izin vermedi\u011fini kontrol edin.<\/p>\n
6. \u00d6l\u00e7eklenebilirlik Planlamas\u0131<\/h4>\n
Uygulaman\u0131z\u0131n gelecekteki b\u00fcy\u00fcme beklentilerini g\u00f6z \u00f6n\u00fcnde bulundurarak veritaban\u0131 mimarinizi ve \u00f6l\u00e7eklendirme stratejilerinizi planlay\u0131n. DijitalOcean'\u0131n okuma replikalar\u0131 gibi \u00f6zelliklerini de\u011ferlendirin.<\/p>\n
Kar\u015f\u0131la\u015f\u0131labilecek Zorluklar ve \u00c7\u00f6z\u00fcmleri<\/h3>\n
Veritaban\u0131 ta\u015f\u0131ma s\u00fcreci her zaman sorunsuz ilerlemeyebilir. \u0130\u015fte yayg\u0131n zorluklar ve olas\u0131 \u00e7\u00f6z\u00fcmleri:<\/p>\n
*   A\u011f Ba\u011flant\u0131 Sorunlar\u0131:<\/strong> Kaynak veritaban\u0131 ile DijitalOcean aras\u0131nda g\u00fcvenlik duvar\u0131, VPN veya a\u011f yap\u0131land\u0131rmas\u0131 nedeniyle ba\u011flant\u0131 sorunlar\u0131 ya\u015fanabilir. \u00c7\u00f6z\u00fcm: G\u00fcvenlik duvar\u0131 kurallar\u0131n\u0131 dikkatlice kontrol edin, IP adreslerinin do\u011fru oldu\u011fundan emin olun ve ping<\/code>, telnet<\/code> veya nc<\/code> (netcat) gibi ara\u00e7larla ba\u011flant\u0131y\u0131 test edin.
\n*   Replikasyon Gecikmesi (Replication Lag):<\/strong> \u00d6zellikle y\u00fcksek i\u015flem hacmine sahip veritabanlar\u0131nda replikasyon gecikmesi ya\u015fanabilir. \u00c7\u00f6z\u00fcm: Kaynak sunucuda yeterli kaynak (CPU, I\/O) oldu\u011fundan emin olun. A\u011f bant geni\u015fli\u011fini kontrol edin. Replikasyon s\u00fcrecinin optimize edildi\u011finden (\u00f6rne\u011fin, PostgreSQL'de max_wal_senders<\/code> ve max_replication_slots<\/code> ayarlar\u0131) emin olun.
\n*   S\u00fcr\u00fcm Uyumsuzluklar\u0131:<\/strong> Kaynak ve hedef veritaban\u0131 s\u00fcr\u00fcmleri aras\u0131ndaki farklar, \u015fema veya veri t\u00fcr\u00fc sorunlar\u0131na yol a\u00e7abilir. \u00c7\u00f6z\u00fcm: Ta\u015f\u0131ma \u00f6ncesi s\u00fcr\u00fcm uyumlulu\u011funu dikkatlice kontrol edin. Gerekirse kaynak veritaban\u0131n\u0131 DijitalOcean'\u0131n destekledi\u011fi bir ara s\u00fcr\u00fcme y\u00fckseltin.
\n*   B\u00fcy\u00fck Veritabanlar\u0131n\u0131n Ta\u015f\u0131nmas\u0131:<\/strong> \u00c7ok b\u00fcy\u00fck veritabanlar\u0131n\u0131n dump\/restore veya ilk replikasyon y\u00fcklemesi uzun s\u00fcrebilir ve kesinti s\u00fcresini art\u0131rabilir. \u00c7\u00f6z\u00fcm: pg_dump<\/code> ve pg_restore<\/code> gibi ara\u00e7larda paralel i\u015fleme (-j<\/code> bayra\u011f\u0131) kullan\u0131n. Verileri par\u00e7alara ay\u0131rarak (sharding) veya sadece kritik tablolar\u0131 \u00f6nceliklendirerek ta\u015f\u0131ma stratejilerini g\u00f6zden ge\u00e7irin.
\n*   \u00d6zel Fonksiyonlar\/Tetikleyiciler:<\/strong> Kaynak veritaban\u0131ndaki \u00f6zel PL\/pgSQL fonksiyonlar\u0131, MySQL stored procedure'lar\u0131 veya tetikleyiciler, hedef ortamda farkl\u0131 davran\u0131\u015flar sergileyebilir veya uyumsuz olabilir. \u00c7\u00f6z\u00fcm: Ta\u015f\u0131ma \u00f6ncesi bu \u00f6zel nesnelerin uyumlulu\u011funu test edin ve gerekirse yeniden yaz\u0131n.
\n*   Ba\u011flant\u0131 Havuzu (Connection Pooling):<\/strong> Yo\u011fun uygulamalarda veritaban\u0131 ba\u011flant\u0131lar\u0131n\u0131 y\u00f6netmek i\u00e7in PgBouncer gibi ba\u011flant\u0131 havuzu ara\u00e7lar\u0131 kullan\u0131l\u0131yorsa, bu ara\u00e7lar\u0131n yeni veritaban\u0131 ba\u011flant\u0131lar\u0131n\u0131 do\u011fru \u015fekilde y\u00f6nlendirdi\u011finden emin olun. DijitalOcean Managed Databases, dahili PgBouncer deste\u011fi sunar.<\/p>\n
Sonu\u00e7<\/h3>\n
Veritaban\u0131n\u0131z\u0131 DijitalOcean'a minimal kesintiyle ta\u015f\u0131mak, dikkatli planlama, do\u011fru stratejilerin se\u00e7imi ve titiz bir uygulama gerektiren \u00e7ok ad\u0131ml\u0131 bir s\u00fcre\u00e7tir. Replikasyon tabanl\u0131 ta\u015f\u0131ma, \u00e7o\u011fu senaryo i\u00e7in en d\u00fc\u015f\u00fck kesinti s\u00fcresini sunan en etkili y\u00f6ntemdir. Ancak, veritaban\u0131n\u0131z\u0131n b\u00fcy\u00fckl\u00fc\u011f\u00fc, karma\u015f\u0131kl\u0131\u011f\u0131 ve kesinti tolerans\u0131n\u0131z, en uygun stratejiyi belirleyecektir.<\/p>\n
Unutmay\u0131n ki her ta\u015f\u0131ma projesi benzersizdir. Bu makalede sunulan ad\u0131mlar ve stratejiler genel bir rehber niteli\u011findedir. Kendi \u00f6zel durumunuz i\u00e7in kapsaml\u0131 bir de\u011ferlendirme yapman\u0131z, detayl\u0131 bir ta\u015f\u0131ma plan\u0131 olu\u015fturman\u0131z ve t\u00fcm ad\u0131mlar\u0131 bir haz\u0131rl\u0131k ortam\u0131nda (staging environment) test etmeniz, ba\u015far\u0131l\u0131 ve sorunsuz bir ge\u00e7i\u015f i\u00e7in kritik \u00f6neme sahiptir. DijitalOcean'\u0131n g\u00fc\u00e7l\u00fc ve y\u00f6netilen veritaban\u0131 hizmetleri, do\u011fru yakla\u015f\u0131mla birle\u015fti\u011finde, uygulamalar\u0131n\u0131z i\u00e7in daha \u00f6l\u00e7eklenebilir, g\u00fcvenilir ve performansl\u0131 bir altyap\u0131ya ge\u00e7i\u015f yapman\u0131z\u0131 sa\u011flayacakt\u0131r.<\/body><\/p>\n","protected":false},"excerpt":{"rendered":"Veritaban\u0131n\u0131z\u0131 DijitalOcean’a Minimal Kesintiyle Ta\u015f\u0131ma\nVeritabanlar\u0131, modern uygulamalar\u0131n ve i\u015fletmelerin kalbidir. Performans, g\u00fcvenilirl","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"csco_page_header_type":"","csco_page_load_nextpost":"","csco_page_subscribe_form":"","csco_page_contact_form":"","footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-36565","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-genel","7":"cs-entry","8":"cs-video-wrap"},"yoast_head":"\nVeritaban\u0131n\u0131z\u0131 DijitalOcean'a Minimal Kesintiyle Ta\u015f\u0131ma - Kodlar\u0131n Gizemli D\u00fcnyas\u0131<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/fatihsoysal.com\/blog\/veritabaninizi-dijitaloceana-minimal-kesintiyle-tasima\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Veritaban\u0131n\u0131z\u0131 DijitalOcean'a Minimal Kesintiyle Ta\u015f\u0131ma\" \/>\n<meta property=\"og:description\" content=\"Veritaban\u0131n\u0131z\u0131 DijitalOcean'a Minimal Kesintiyle Ta\u015f\u0131ma Veritabanlar\u0131, modern uygulamalar\u0131n ve i\u015fletmelerin kalbidir. 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