---
description: Integration patterns and advanced features in Model Context Protocol
---
# MCP Integration Patterns
## Multi-Server Architecture
```mermaid
graph TB
subgraph Client ["Client Application"]
direction TB
MC[Main Client]
subgraph ClientServices ["Client Services"]
direction LR
SM[Server Manager]
CH[Capability Handler]
LB[Load Balancer]
CB[Circuit Breaker]
end
end
subgraph Servers ["MCP Servers"]
direction TB
subgraph Primary ["Primary Servers"]
S1[Server 1]
S2[Server 2]
end
subgraph Backup ["Backup Servers"]
S3[Server 3]
S4[Server 4]
end
end
subgraph Integration ["Integration Layer"]
direction TB
subgraph Core ["Core Services"]
AG[Aggregator]
RR[Request Router]
DI[Discovery Service]
end
subgraph Resilience ["Resilience Services"]
FD[Failure Detector]
RM[Recovery Manager]
HM[Health Monitor]
end
end
MC --> ClientServices
SM --> CH
CH --> RR
RR --> AG
AG --> Primary
AG --> Backup
LB --> Primary
CB --> Primary
CB --> Backup
FD --> Primary
FD --> Backup
RM --> FD
HM --> FD
style Client fill:#e1f3d8,stroke:#82c458
style Servers fill:#ffd7d7,stroke:#ff8080
style Integration fill:#d7e3ff,stroke:#80b3ff
style Primary fill:#ffe6e6,stroke:#ff8080
style Backup fill:#fff0e6,stroke:#ffb380
style Core fill:#e6f0ff,stroke:#80b3ff
style Resilience fill:#f0e6ff,stroke:#b380ff
```
## Advanced Resource Management
```mermaid
stateDiagram-v2
[*] --> ResourceRequested
state ResourceManagement {
ResourceRequested --> ValidationCheck
state ValidationCheck {
[*] --> SchemaValidation
SchemaValidation --> SecurityCheck
SecurityCheck --> PermissionCheck
PermissionCheck --> [*]
}
ValidationCheck --> CacheCheck
state CacheCheck {
[*] --> CheckLocal
CheckLocal --> CheckDistributed
CheckDistributed --> CheckStale
state CheckStale {
[*] --> ValidateTimestamp
ValidateTimestamp --> ValidateVersion
ValidateVersion --> [*]
}
}
CacheCheck --> ResourceFetch
state ResourceFetch {
[*] --> AcquireLock
AcquireLock --> FetchData
FetchData --> ValidateData
ValidateData --> ReleaseLock
ReleaseLock --> [*]
}
ResourceFetch --> CacheUpdate
state CacheUpdate {
[*] --> UpdateLocal
UpdateLocal --> UpdateDistributed
UpdateDistributed --> NotifyPeers
NotifyPeers --> [*]
}
}
ResourceManagement --> StreamSetup
state StreamSetup {
[*] --> InitializeStream
InitializeStream --> ConfigureBackpressure
ConfigureBackpressure --> SetupHeartbeat
SetupHeartbeat --> [*]
}
StreamSetup --> [*]
```
## Resilience Patterns
```mermaid
flowchart TD
subgraph Detection ["Failure Detection"]
direction TB
HC[Health Check]
TO[Timeout Monitor]
ER[Error Rate Monitor]
LA[Latency Analyzer]
end
subgraph Response ["Failure Response"]
direction TB
CB[Circuit Breaker]
RT[Retry Handler]
FO[Failover Manager]
DC[Degraded Mode Controller]
end
subgraph Recovery ["Recovery Process"]
direction TB
RM[Recovery Manager]
SR[State Reconciliation]
DR[Data Recovery]
SY[System Repair]
end
HC --> CB
TO --> CB
ER --> CB
LA --> CB
CB --> RT
RT --> FO
FO --> DC
DC --> RM
RM --> SR
SR --> DR
DR --> SY
style Detection fill:#ffe6e6,stroke:#ff8080
style Response fill:#e6ffe6,stroke:#80ff80
style Recovery fill:#e6e6ff,stroke:#8080ff
```
## Error Handling Strategy
```mermaid
sequenceDiagram
participant C as Client
participant EH as Error Handler
participant CB as Circuit Breaker
participant R as Retry Manager
participant B as Backoff Manager
participant F as Failover Manager
participant S as Server
C->>S: Request
alt Timeout Error
S-->>EH: Timeout
EH->>CB: Check Circuit
alt Circuit Closed
CB->>R: Should Retry?
R->>B: Calculate Backoff
B-->>R: Wait Time
R->>S: Retry Request
else Circuit Open
CB->>F: Initiate Failover
F->>S: Switch Server
S-->>C: Response from Backup
end
else Server Error
S-->>EH: 5xx Error
EH->>CB: Update Status
CB->>F: Handle Failure
F->>S: Switch Server
S-->>C: Response from Backup
else Client Error
S-->>EH: 4xx Error
EH->>C: Handle Client Error
else Network Error
S-->>EH: Network Error
EH->>R: Retry with Backoff
loop Retry Attempts
R->>B: Get Next Backoff
B-->>R: Backoff Duration
R->>S: Retry Request
end
end
```
