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Apache Flink vs Postgrey

A side-by-side look at Apache Flink and Postgrey. For an in-depth review of either product, follow the links below.

 Apache Flink

Apache Flink

Development

Apache Flink is an open-source stream processing framework that performs stateful computations over unbounded and bounded data streams. It offers high throughput, low latency, accurate results, and fault tolerance.

opensourcestream-processingrealtimedistributedscalable
Postgrey

Postgrey

Network & Admin

Postgrey is an SMTP proxy program that temporarily delays mail delivery to help mitigate spam. It uses greylisting to reject initial email delivery attempts, forcing email servers to retry sending messages and confirming they are not spammers.

greylistingsmtpemail-deliveryantispam