* We forgot the real names of Adam Sandler and Drew Barrymore's characters and did not look them up while writing this article.
When Drew* starts out knowing nothing each day, the videotape is able to backfill her knowledge, as if she was a data application being spun up and we're replaying the Kafka log.The videos are added in the exact order they occurred.
Mysql change data capture full#
Instead of re-creating the tape from scratch each day, which would be very time-consuming and equivalent to a nightly full database export, Adam* appends onto the end of the tape.Appending the new video of each new date to the end of the videotape is the essence of Apache Kafka's log design as well as change data capture.The videotape of events can be thought of as a database or continuous log, and new memories can be thought of as INSERT or ‘append’ events. Our creative hopeless romantic has effectively employed an efficient, yet simple change data capture process. He adds on to the end of the tape each day so she is always ‘stateful’ with regard to current reality. The tape linearly summarizes her life, the news, and the major milestones. Instead, he creates a videotape for her to watch each morning when she wakes up. Our other lovestruck character doesn’t lose hope, though. In the movie, one of our main characters suffers from severe amnesia after an accident and is unable to retain new memories. The 2004 flick 50 First Dates starring Adam Sandler and Drew Barrymore can help explain the system design behind efficient change data capture, as well as Apache Kafka. Preamble: Change Data Capture Explained by Rom-Com Looking for a relatively quick but no-fluff explanation of what change data capture (CDC) is? Trying to understand your CDC options for different data systems, and get nuanced comparisons without reading documentation that's liable to melt your brain?Įxcellent.
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