When should I use Apache Storm instead of Apache Flink?

Real-time computation on unbounded streams with guaranteed message processing semantics. Legacy real-time processing systems built before Flink and Spark Streaming became dominant. Low-latency stream topologies (spouts and bolts) where sub-second processing is critical

When should I use Apache Flink instead of Apache Storm?

Stateful stream processing with exactly-once guarantees and low latency at scale. Real-time analytics, complex event processing, and windowed aggregations on event streams. Unified batch and streaming pipelines with a consistent API and shared execution engine

What are the main weaknesses of Apache Storm?

Largely superseded by Apache Flink and Spark Structured Streaming for all new projects. JVM-based; Python support via Streamparse is a second-class experience with limitations. No built-in stateful processing — managing state requires external systems like Redis or HBase

What are the main weaknesses of Apache Flink?

JVM-based with a complex deployment model involving JobManager, TaskManager, and checkpointing. Python API (PyFlink) lags behind the Java and Scala APIs in feature coverage and maturity. Steep learning curve for stateful operators, watermarks, checkpointing, and savepoint management

Apache Storm vs Apache Flink: Key Differences for Python Data Engineering

Stream Processing

Apache Storm

Real-Time Computation System

★ 4.4

Apache-2.0

pip install streamparse

Apache Flink

Stream Processing Framework

★ 4.7

Apache-2.0

pip install apache-flink

Side-by-Side Comparison

Apache Storm

Apache Flink

Apache Storm

Apache Flink

Best For

✓Real-time computation on unbounded streams with guaranteed message processing semantics
✓Legacy real-time processing systems built before Flink and Spark Streaming became dominant
✓Low-latency stream topologies (spouts and bolts) where sub-second processing is critical

✓Stateful stream processing with exactly-once guarantees and low latency at scale
✓Real-time analytics, complex event processing, and windowed aggregations on event streams
✓Unified batch and streaming pipelines with a consistent API and shared execution engine

Best For

✓Real-time computation on unbounded streams with guaranteed message processing semantics
✓Legacy real-time processing systems built before Flink and Spark Streaming became dominant
✓Low-latency stream topologies (spouts and bolts) where sub-second processing is critical

✓Stateful stream processing with exactly-once guarantees and low latency at scale
✓Real-time analytics, complex event processing, and windowed aggregations on event streams
✓Unified batch and streaming pipelines with a consistent API and shared execution engine

Weaknesses

•Largely superseded by Apache Flink and Spark Structured Streaming for all new projects
•JVM-based; Python support via Streamparse is a second-class experience with limitations
•No built-in stateful processing — managing state requires external systems like Redis or HBase

•JVM-based with a complex deployment model involving JobManager, TaskManager, and checkpointing
•Python API (PyFlink) lags behind the Java and Scala APIs in feature coverage and maturity
•Steep learning curve for stateful operators, watermarks, checkpointing, and savepoint management

Weaknesses

•Largely superseded by Apache Flink and Spark Structured Streaming for all new projects
•JVM-based; Python support via Streamparse is a second-class experience with limitations
•No built-in stateful processing — managing state requires external systems like Redis or HBase

•JVM-based with a complex deployment model involving JobManager, TaskManager, and checkpointing
•Python API (PyFlink) lags behind the Java and Scala APIs in feature coverage and maturity
•Steep learning curve for stateful operators, watermarks, checkpointing, and savepoint management

License

Apache-2.0

License

Apache-2.0

Install

pip install streamparse

pip install apache-flink

Install

pip install streamparse

pip install apache-flink

Rating

★ 4.4

★ 4.7

Rating

★ 4.4

★ 4.7

Key Features

Apache Storm

1Real-time stream processing with guaranteed message processing semantics
2Topology-based architecture defining spouts (sources) and bolts (processors)
3Horizontal scalability by adding workers to running topologies
4At-least-once and exactly-once processing guarantees via transactional topologies
5Integration with Kafka, HDFS, HBase, and other ecosystem components

Apache Flink

1True streaming engine processing events one at a time with low latency
2Exactly-once state consistency guarantees using distributed checkpointing
3Unified batch and stream processing API in a single framework
4Stateful computations with managed state backends (RocksDB, memory)
5SQL support via Flink SQL for stream-relational queries

How Python Data Engineers Use These Tools

Apache Storm

Python data engineers use Apache Storm via the streamparse library to write Storm topologies in Python. Storm is used for real-time event processing, fraud detection, and IoT telemetry pipelines where data must be processed and acted upon within milliseconds. While Kafka Streams and Flink have largely superseded Storm in new builds, it remains in production at organisations processing high-velocity event streams.

Apache Flink

Python data engineers use Apache Flink via PyFlink to build real-time streaming pipelines for fraud detection, real-time analytics, and complex event processing. Flink SQL enables engineers to write streaming queries in familiar SQL syntax, joining Kafka streams with database lookups in real time. Flink is preferred over Spark Streaming for use cases requiring low latency (sub-second) processing and stateful computations across unbounded event streams.

More Stream Processing Comparisons

Stream Processing

Apache Flink vs Apache Kafka

Stream Processing

Apache Storm vs Apache Kafka

Stream Processing

Faust vs Apache Kafka

Stream Processing

Apache Kafka vs Apache Spark Streaming

Stream Processing

Apache Kafka vs Redpanda

Stream Processing

Apache Samza vs Apache Kafka

Individual Tool Pages

View Apache Storm details →View Apache Flink details →

Side-by-Side Comparison

Apache Storm

Apache Flink

Apache Storm

Apache Flink

Best For

✓Real-time computation on unbounded streams with guaranteed message processing semantics
✓Legacy real-time processing systems built before Flink and Spark Streaming became dominant
✓Low-latency stream topologies (spouts and bolts) where sub-second processing is critical

✓Stateful stream processing with exactly-once guarantees and low latency at scale
✓Real-time analytics, complex event processing, and windowed aggregations on event streams
✓Unified batch and streaming pipelines with a consistent API and shared execution engine

Best For

✓Real-time computation on unbounded streams with guaranteed message processing semantics
✓Legacy real-time processing systems built before Flink and Spark Streaming became dominant
✓Low-latency stream topologies (spouts and bolts) where sub-second processing is critical

✓Stateful stream processing with exactly-once guarantees and low latency at scale
✓Real-time analytics, complex event processing, and windowed aggregations on event streams
✓Unified batch and streaming pipelines with a consistent API and shared execution engine

Weaknesses

•Largely superseded by Apache Flink and Spark Structured Streaming for all new projects
•JVM-based; Python support via Streamparse is a second-class experience with limitations
•No built-in stateful processing — managing state requires external systems like Redis or HBase

•JVM-based with a complex deployment model involving JobManager, TaskManager, and checkpointing
•Python API (PyFlink) lags behind the Java and Scala APIs in feature coverage and maturity
•Steep learning curve for stateful operators, watermarks, checkpointing, and savepoint management

Weaknesses

•Largely superseded by Apache Flink and Spark Structured Streaming for all new projects
•JVM-based; Python support via Streamparse is a second-class experience with limitations
•No built-in stateful processing — managing state requires external systems like Redis or HBase

•JVM-based with a complex deployment model involving JobManager, TaskManager, and checkpointing
•Python API (PyFlink) lags behind the Java and Scala APIs in feature coverage and maturity
•Steep learning curve for stateful operators, watermarks, checkpointing, and savepoint management

License

Apache-2.0

License

Apache-2.0

Install

pip install streamparse

pip install apache-flink

Install

pip install streamparse

pip install apache-flink

Rating

★ 4.4

★ 4.7

Rating

★ 4.4

★ 4.7

Key Features

Apache Storm

1Real-time stream processing with guaranteed message processing semantics
2Topology-based architecture defining spouts (sources) and bolts (processors)
3Horizontal scalability by adding workers to running topologies
4At-least-once and exactly-once processing guarantees via transactional topologies
5Integration with Kafka, HDFS, HBase, and other ecosystem components

Apache Flink

1True streaming engine processing events one at a time with low latency
2Exactly-once state consistency guarantees using distributed checkpointing
3Unified batch and stream processing API in a single framework
4Stateful computations with managed state backends (RocksDB, memory)
5SQL support via Flink SQL for stream-relational queries

How Python Data Engineers Use These Tools