Antigravity Agent
151 lines
5.1 KiB
Markdown
151 lines
5.1 KiB
Markdown
---
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id: wiki-2026-0508-enterprise-service-bus
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title: Enterprise Service Bus
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category: 10_Wiki/Topics
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status: verified
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canonical_id: self
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aliases: [ESB, Service Bus, Integration Bus]
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duplicate_of: none
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source_trust_level: A
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confidence_score: 0.9
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verification_status: applied
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tags: [architecture, integration, soa, messaging, esb]
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raw_sources: []
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last_reinforced: 2026-05-10
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github_commit: pending
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tech_stack:
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language: java
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framework: apache-camel
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---
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# Enterprise Service Bus
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## 매 한 줄
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> **"매 ESB = SOA 시대 의 integration backbone — 매 2026 의 legacy + event mesh 의 hybrid"**. 매 hub-and-spoke 의 anti-pattern 회피 위한 message-bus pattern. 매 modern 의 Kafka + service mesh + iPaaS (MuleSoft, Boomi) 가 ESB 의 기능 의 분산.
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## 매 핵심
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### 매 ESB 의 6 capabilities
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- **Routing**: 매 content-based, header-based.
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- **Transformation**: 매 XML↔JSON↔Avro, schema mapping.
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- **Protocol bridging**: 매 SOAP↔REST↔AMQP↔JMS↔FTP.
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- **Orchestration**: 매 multi-step workflow (BPEL, Camel routes).
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- **Mediation**: 매 versioning, throttling, security policy.
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- **Monitoring**: 매 audit, SLA tracking, error queues.
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### 매 versus alternatives
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- **Point-to-point**: 매 N×N integration — ESB 의 N+1.
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- **Hub-and-spoke**: 매 single hub bottleneck — ESB 의 distributed.
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- **Event mesh (modern)**: 매 Kafka + Schema Registry — 매 ESB 보다 throughput ↑, transformation logic 의 service-side.
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- **iPaaS**: 매 cloud-native ESB — 매 SaaS connector 의 thousand+.
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### 매 응용
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1. Bank legacy mainframe ↔ digital channel integration.
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2. ERP (SAP) ↔ CRM (Salesforce) sync.
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3. B2B EDI translation (X12, EDIFACT).
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## 💻 패턴
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### Apache Camel content-based router
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```java
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from("jms:queue:incomingOrders")
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.choice()
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.when(jsonpath("$.priority == 'HIGH'"))
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.to("kafka:high-priority-orders")
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.when(jsonpath("$.region == 'EU'"))
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.to("amqp:eu-orders")
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.otherwise()
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.to("jms:queue:standardOrders")
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.end();
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```
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### XML → JSON transformation
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```java
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from("file:input/orders?include=.*\\.xml")
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.unmarshal().jacksonXml(Order.class)
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.marshal().json(JsonLibrary.Jackson)
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.to("http://api.example.com/orders");
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```
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### Saga orchestration (Camel)
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```java
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from("direct:placeOrder")
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.saga()
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.compensation("direct:cancelOrder")
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.timeout(java.time.Duration.ofMinutes(5))
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.to("direct:reserveInventory")
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.to("direct:chargePayment")
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.to("direct:scheduleShipment");
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```
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### Dead letter channel
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```java
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errorHandler(deadLetterChannel("jms:queue:dlq")
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.maximumRedeliveries(3)
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.redeliveryDelay(2000)
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.useExponentialBackOff());
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```
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### Modern replacement: Kafka + KStreams
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```java
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StreamsBuilder builder = new StreamsBuilder();
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builder.stream("orders", Consumed.with(Serdes.String(), orderSerde))
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.filter((k, v) -> v.getAmount() > 1000)
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.mapValues(o -> enrichWithCustomer(o))
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.to("high-value-orders");
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```
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### Service mesh sidecar (Istio) replacement
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```yaml
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apiVersion: networking.istio.io/v1beta1
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kind: VirtualService
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metadata:
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name: order-routing
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spec:
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http:
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- match:
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- headers:
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x-region:
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exact: EU
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route:
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- destination:
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host: order-service-eu
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```
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## 매 결정 기준
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| 상황 | Approach |
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|---|---|
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| Greenfield microservices | Kafka + service mesh, ESB X |
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| Legacy mainframe + SaaS integration | iPaaS (MuleSoft, Boomi) |
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| Heavy XML/SOAP B2B | Apache Camel or MuleSoft |
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| Event-driven architecture | Kafka + Schema Registry |
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| Complex orchestration | Camel + Saga or Temporal.io |
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**기본값**: 매 2026 의 new project — Kafka + service mesh. 매 legacy integration — Camel or iPaaS. 매 traditional ESB (WSO2, Mule 3) 의 신규 도입 X.
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## 🔗 Graph
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- 부모: [[Service-Oriented Architecture (SOA)]] · [[Enterprise Integration Patterns]]
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- 변형: [[Event Mesh]] · [[iPaaS]] · [[Service Mesh]]
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- 응용: [[B2B Integration]] · [[Legacy Modernization]] · [[API Gateway]]
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- Adjacent: [[Message Queue]] · [[Apache Kafka]] · [[Saga Pattern]]
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## 🤖 LLM 활용
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**언제**: 매 EIP pattern matching, 매 Camel DSL generation, 매 XSLT/XPath debugging, 매 legacy SOAP WSDL → REST OpenAPI 변환.
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**언제 X**: 매 production routing rules 의 직접 deploy — 매 정확한 schema validation, dead-letter handling 의 review 필요. 매 transformation logic 의 round-trip test 필수.
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## ❌ 안티패턴
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- **God-ESB**: 매 모든 business logic 의 ESB 의 집중 — 매 bus 의 monolith. 매 logic 의 service-side.
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- **Synchronous chains**: 매 ESB 의 long sync calls — 매 cascading failure. 매 async + saga.
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- **No schema governance**: 매 transformation 의 implicit contract — 매 producer change 시 silent break.
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- **2026 의 new ESB 도입**: 매 platform team 의 maintenance cost ↑ — 매 Kafka + iPaaS 의 분산.
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## 🧪 검증 / 중복
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- Verified (Hohpe & Woolf "Enterprise Integration Patterns" 2003, Apache Camel docs 4.x, Gartner ESB→iPaaS 의 2024 report).
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- 신뢰도 A.
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## 🕓 Changelog
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| 날짜 | 변경 |
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|---|---|
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| 2026-05-08 | Phase 1 |
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| 2026-05-10 | Manual cleanup — Camel patterns, modern Kafka/mesh replacement, iPaaS context 추가 |
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