spinny:~/writing $ vim scale-web-applications.md
1~2Kapag lumalaki ang isang web application sa mga user, data, at feature, ang scalability ay nagiging prayoridad.3~4## Vertical vs Horizontal Scalability5~6```mermaid7flowchart LR8 A[Users] --> B[Load Balancer]9 B --> S1[Server 1]10 B --> S2[Server 2]11 B --> S3[Server 3]12```13~14- **Vertical:** simple na i-implement, ngunit may pisikal na limitasyon.15- **Horizontal:** mas resilient at scalable.16~17## Caching: Pagpapabilis ng mga Sagot18~19```mermaid20flowchart TD21 U[User] --> CDN[CDN]22 CDN --> App[Application]23 App --> DB[Database]24```25~26## Load Balancing: Pamamahagi ng Traffic27~28```mermaid29flowchart TD30 U[User] --> LB[Load Balancer]31 LB --> S1[Server 1]32 LB --> S2[Server 2]33 LB --> S3[Server 3]34```35~36## Database Scaling: Replication at Sharding37~38```mermaid39flowchart TD40 App[Application] --> DB1[Shard 1]41 App --> DB2[Shard 2]42 App --> DB3[Shard 3]43```44~45## Microservices at Distributed Architecture46~47```mermaid48flowchart TD49 U[User] --> API[API Gateway]50 API --> MS1[Microservice 1]51 API --> MS2[Microservice 2]52 API --> MS3[Microservice 3]53 MS1 --> DB1[(DB 1)]54 MS2 --> DB2[(DB 2)]55 MS3 --> DB3[(DB 3)]56```57~58## Asynchrony at Work Queue59~60```mermaid61flowchart TD62 App[Application] -- send task --> Queue[Queue]63 Queue --> Worker[Worker]64 Worker --> DB[Database]65```66~67## Monitoring at Auto-Scaling68~69## Karaniwang Scalability Pattern70~71- **Strangler Fig Pattern**: unti-unting migration mula monolith patungo sa microservices.72- **CQRS**: hinahiwalay ang mga read at write.73- **Event Sourcing**: pinamamahalaan ang application state sa pamamagitan ng mga event.74~75## Advanced Scalability Pattern76~77- **Circuit Breaker**: pinipigilan ang cascading failure.78- **Bulkhead**: ini-isolate ang mga resource sa pagitan ng mga component.79- **Retry at Backoff**: awtomatikong pag-retry na may tumataas na interval.80- **Rate Limiting**: nililimitahan ang bilang ng mga request.81~82```mermaid83flowchart TD84 Client --> API[API Gateway]85 API --> CB[Circuit Breaker]86 CB --> Svc[Service]87 Svc --> DB[Database]88 API --> RL[Rate Limiter]89 RL --> CB90```91~92## Kumpletong Request Flow93~94```mermaid95flowchart LR96 U[User] --> CDN[CDN]97 CDN --> LB[Load Balancer]98 LB --> API[API Gateway]99 API --> MS[Microservices]100 MS --> MQ[Message Queue]101 MS --> Redis[Cache]102 MS --> DB[Database]103 MQ --> Worker[Worker]104 Worker --> DB105```106~107## Kongklusyon108~109Ang pag-scale ng isang web application ay nangangailangan ng holistic na pananaw: arkitektura, tool, automation, monitoring, at DevOps culture. Ang pag-aaral ng mga advanced pattern at pag-aaral mula sa mga pagkakamali ng malalaking kumpanya ang susi sa pagtatayo ng mga resilient na sistema.110~
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