DBRavenArchitecture Decision Reports

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Architecture Structural Diff

Compare two scenarios node-by-node. See exactly which components, failure modes, and connections are shared, removed (−), or added (+) when switching from the left scenario to the right.

Select Scenarios to Diff

left, removals (−)

AI Retrieval-Augmented Generation Platform

AI / RAG

API Gateway Platform

Multi-Tenant SaaS

Analytics Data Platform

Analytics

Audit and Compliance Platform

Financial Ledger

Content Management Platform

Read-Heavy

Developer Tools Platform

Multi-Tenant SaaS

Distributed Job Queue Platform

Write-Heavy

E-Commerce Order Platform

Marketplace

Event-Driven Analytics Pipeline

Event-Driven

Financial Ledger Platform

Financial Ledger

Gaming Backend Platform

Realtime Collab

Geospatial Tracking Platform

Realtime Collab

Healthcare Records Platform

Financial Ledger

IoT Telemetry Ingestion Platform

Write-Heavy

ML Feature Serving Platform

AI / RAG

Multi-Tenant SaaS Platform

Multi-Tenant SaaS

Notification Delivery Platform

Event-Driven

Observability Platform

Analytics

Read-Heavy SaaS API

Read-Heavy

Realtime Collaborative Editor

Search-Heavy Content Platform

Search-Heavy

Social Feed Platform

Event-Driven

Streaming Media Platform

Event-Driven

Two-Sided Marketplace Platform

Marketplace

Write-Heavy Transactional Platform

Write-Heavy

right, removals (−)

AI Retrieval-Augmented Generation Platform

AI / RAG

API Gateway Platform

Multi-Tenant SaaS

Analytics Data Platform

Analytics

Audit and Compliance Platform

Financial Ledger

Content Management Platform

Read-Heavy

Developer Tools Platform

Multi-Tenant SaaS

Distributed Job Queue Platform

Write-Heavy

E-Commerce Order Platform

Marketplace

Event-Driven Analytics Pipeline

Event-Driven

Financial Ledger Platform

Financial Ledger

Gaming Backend Platform

Realtime Collab

Geospatial Tracking Platform

Realtime Collab

Healthcare Records Platform

Financial Ledger

IoT Telemetry Ingestion Platform

Write-Heavy

ML Feature Serving Platform

AI / RAG

Multi-Tenant SaaS Platform

Notification Delivery Platform

Event-Driven

Observability Platform

Analytics

Read-Heavy SaaS API

Read-Heavy

Realtime Collaborative Editor

Realtime Collab

Search-Heavy Content Platform

Search-Heavy

Social Feed Platform

Event-Driven

Streaming Media Platform

Event-Driven

Two-Sided Marketplace Platform

Marketplace

Write-Heavy Transactional Platform

Write-Heavy

Multi-Tenant SaaS Platform→Realtime Collaborative Editor

−10 removed+1 added5 unchanged

Components

11

Multi-Tenant SaaS Platform

5

Realtime Collaborative Editor

4 shared−7+1

Failure Modes

4

Multi-Tenant SaaS Platform

1

Realtime Collaborative Editor

1 shared−3

Connections

7

Multi-Tenant SaaS Platform

2

Realtime Collaborative Editor

2 shared−5

Components

4 shared−7 left only+1 right only

=

PostgreSQLprimary datastore

data management

=

Rediscache

acceleration

=

Connection Poolingarchitecture pattern

interface or access

=

Connection Pool Exhaustionoperational risk

operational risk

−

Read-Heavy API Backendworkload

workload

−

Mixed OLTP (SaaS Core)workload

workload

−

Cache-Asidearchitecture pattern

application logic

−

Shardingarchitecture pattern

application logic

−

Hot Partitionoperational risk

operational risk

−

N+1 Query Problemoperational risk

operational risk

−

Tenant Noisy Neighboroperational risk

operational risk

+

High-Throughput OLTPworkload

workload

Failure Modes

1 shared−3 left only

=

Connection Pool Exhaustion1 nodes affected

high

−

Hot Partition1 nodes affected

highhigh

−

N+1 Query Problem1 nodes affected

moderate

−

Tenant Noisy Neighbor0 nodes affected

highhigh

Connections

2 shared−5 left only

=

A connection pool bounds the total database connections an application can open, preventing connection storms during traffic spikes and protecting the database server from exceeding its connection limit.

mitigates

=

Redis clients hold persistent TCP connections per thread or goroutine. Under connection pool misconfiguration or sudden traffic spikes, the Redis server can exhaust its maxclients limit, causing cascading cache misses that amplify load on the primary database.

introduces risk

−

Redis caching absorbs repeated read requests at the edge, reducing database load and latency for high read-to-write ratio workloads by orders of magnitude.

mitigates

−

Read-heavy APIs benefit directly from Redis as a caching tier that absorbs repeated identical reads and provides sub-millisecond response times for hot data, reducing both latency and database load.

benefits from

−

Read-heavy APIs generate large numbers of short-lived database connections. Connection pooling reduces per-request connection overhead and allows the database to serve far more concurrent requests than its max_connections limit.

benefits from

−

Read-heavy API workloads amplify N+1 query patterns: loading a list of N entities and then issuing N individual queries for related data causes database query count to grow proportionally with response size, exhausting connection pools and causing latency spikes under load.

vulnerable torisk path

−

Sharding distributes data across partitions, but poor shard key selection concentrates traffic on a small number of shards. A hot partition receives disproportionate load, becomes a bottleneck, and degrades performance for all data on that shard.

introduces riskrisk path

Six-Dimension Assessment

Structural comparison across complexity, risk, scalability, maturity, observability, and generator readiness.

moderate complexity, 11 nodes, 7 edges, 4 risks, 3 simulation seeds

Complexity

tie

expert complexity, 5 nodes, 2 edges, 1 risks, 1 simulation seeds

4 risks (top: high), 3 high/critical, 2 confirmed by simulation

Operational Risk

Realtime →

1 risks (top: high), 1 high/critical, 1 confirmed by simulation

4 scaling thresholds, 3 migration paths, 9 advisor scaling signals

Scalability

← Multi-Tenant

3 scaling thresholds, 2 migration paths, 6 advisor scaling signals

Advisor assessment: Intermediate; recommended team: Small Product Team; 6 operational requirements

Operational Maturity

← Multi-Tenant

Advisor assessment: Expert Only; recommended team: Enterprise Architecture Team; 6 operational requirements

9 watched metrics, 6 observability recommendations, 3 simulation seeds

Observability

Realtime →

4 watched metrics, 2 observability recommendations, 1 simulation seeds

generator relevance documented; topology generation relevance noted; simulation relevance noted; 3 seeds with generator notes

Generator Readiness

← Multi-Tenant

generator relevance documented; topology generation relevance noted; simulation relevance noted; 1 seeds with generator notes

Full comparison + decision path →Topology: Multi-Tenant SaaS Platform →Topology: Realtime Collaborative Editor →