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Microservices Fundamentals

Monolith to Microservices in Spring

Migration Path
💡 EK, Spring, monolith, ko, microservices, mein, MIGRATE, karna, EK, "BADI, JOINT, FAMILY, ke, GHAR, ko, ALAG, ALAG, FLATS, mein, DIVIDE" karne, jaisa, hai — HAR, FAMILY, MEMBER, (module) apna, ALAG, FLAT, (service) GET, karta hai, apni, KHUD, ki, KEYS, (database) ke, saath.

Ek, TYPICAL, Spring, monolith, mein, SAARE, MODULES, (orders, inventory, payments) EK, HI, WAR, file, aur, EK, HI, DATABASE, SHARE, karte, HAIN — MIGRATION, ka, PEHLA, STEP, hai, MODULE, BOUNDARIES, ko, CLEARLY, IDENTIFY, karna.

Spring, Boot, mein, MIGRATION, GRADUALLY, ki, ja, sakti, hai — EK, MODULE, ko, EK, TIME, PAR, EXTRACT, karके, EK, NAYI, Spring, Boot, application, mein, MOVE, kiya, jaata, hai, apni, OWN, database, aur, REST, API, ke, saath.

// Monolith (single WAR):
// com.shop.orders, com.shop.inventory, com.shop.payments (EK, hi, deployable)

// Extracted microservice:
// order-service/ (apna, pom.xml, apna, database, apna, deployment)
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EK, Spring, monolith, ko, microservices, mein, MIGRATE, karna, EK, "BADI, JOINT, FAMILY, ke, GHAR, ko, ALAG, ALAG, FLATS, mein, DIVIDE" karne, jaisa, hai — HAR, FAMILY, MEMBER, (module) apna, ALAG, FLAT, (service) GET, karta hai, apni, KHUD, ki, KEYS, (database) ke, saath.
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⚡ Quick Recap
  • Migration, ka, PEHLA, step = module, boundaries, ko, clearly, identify, karna
  • Gradual, extraction — EK, module, EK, TIME, PAR, apni, OWN, database, ke, saath
  • Anti-corruption, layer, se, monolith, aur, naye, services, EK, saath, coexist, kar, sakte, hain
Is page mein (2 subtopics)

Migration, ke, DAURAN, sabse, TRICKY, PART, hota, hai, DATABASE, ko, SEPARATE, karna — foreign, keys, jo, DIFFERENT, modules, ke, tables, ke, beech, THI, unhe, application-level, references, (IDs, sirf) mein, CONVERT, karna, PADТА, hai.

⚠️Common Mistake: Ek, common, mistake, hai, EXTRACTED, service, ko, PHIR, bhi, monolith, ki, database, se, DIRECTLY, JOIN, karne, deना — YE, "distributed, monolith" create, karta, hai.

Ek, SAFE, migration, technique, hai, "parallel, run" — NAYI, extracted, service, aur, PURANI, monolith, code, DONO, ko, PARALLEL, mein, chalate, hue, results, COMPARE, karna, taaki, CONFIDENCE, mile, PEHLE, monolith, code, ko, HATANE, se, PEHLE.