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whitepaper

From Batch to Streaming: How a Healthcare Platform Did It in One Quarter.

A streaming migration playbook for Data Engineering Leads moving healthcare workloads to real-time - bounded scope, managed Kafka and Flink, and a one-workload-per-week migration cadence with the batch path running in parallel.

In depth

Your Healthcare Workloads Need Real-Time Insights.

01

Healthcare data architectures grew up batch.

Overnight ETL was the right answer for a generation of reporting workloads. It is the wrong answer for sepsis prediction, clinical alerts, care gap notification, and eligibility verification - the workloads where minutes change outcomes.

In shortIt is the wrong answer for sepsis prediction, clinic…
02

Most batch-to-streaming migrations we audit are too ambitious.

The team tries to replace the warehouse, replace the ETL framework, and rebuild every dashboard at the same time, and the project ships in 18 months or not at all.

In shortthe project ships in 18 months or not at all
The detail

The Three Decisions Every Healthcare Streaming Migration Hinges On.

Zone · 01

Workload Prioritization

Identify the three to five workloads where streaming matters most. Healthcare typically picks: ED throughput, clinical alerts, eligibility verification, care gap notification, and sepsis prediction. Everything else stays batch until the streaming layer has earned the right to expand.

Zone · 02

Managed Streaming Stack

Deploy a managed Kafka and Flink stack. Confluent Cloud, AWS MSK with Managed Flink, or equivalent. Self-building the streaming infrastructure consumes the entire migration window before any workload ships.

Zone · 03

Workload Migration

Migrate one workload per week to the streaming stack. Each migration ships behind a feature flag with the batch path still running in parallel, so rollback is one toggle and the team learns the streaming stack in production before it is the only path.

By the numbers

The figures that make it a board-level conversation.

4 of 4
Workloads migrated to streaming on commitment
97%
End-to-end latency reduction on clinical alerts
14 min
Sepsis alert lead time after migration
Inside the report

What you'll take away.

01

Weeks 1–3 - Workload prioritization

Identify the three to five workloads where streaming matters most. Healthcare typically picks: ED throughput, clinical alerts, eligibility verification, care gap notification, sepsis prediction.

02

Weeks 4–7 - Managed streaming stack

Deploy a managed Kafka and Flink stack. Confluent Cloud, AWS MSK with Managed Flink, or equivalent.

03

Weeks 8–10 - Workload migration

Migrate one workload per week to the streaming stack. Each migration ships behind a feature flag with the batch path still running in parallel.

Questions

Frequently asked.

Why managed and not self-built?
How do we handle PHI on the streaming layer?
What about late-arriving data from EHR?
Does this replace our existing batch ETL?
How do we keep clinical teams confident during the migration?
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Next step

Real-Time Clinical Alerts, Care Gap, and Eligibility All Live in Production.

Talk through how this applies to your roadmap with our engineering leads - a working session, not a sales pitch.

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