A persistent connection is an HTTP Long Poll i.e. a regular HTTP connection where the server doesn't disconnect it.
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Having a lot of people interact on live videos poses many technical challenges. Mainly because viewers generate a lot of interactions that need to be delivered fast.
To get a sense of the scale, the top live streams in the world gathered millions of concurrent users:
Akka is a toolkit for building highly concurrent, distributed, and resilient message-driven apps.
LinkedIn has built the Realtime Platform to distribute multiple types of data in real-time such as:
Their goal is to increase user engagement by enabling dynamic instant experiences between users, such as: likes, comments, polls, discussions etc.
Expanding to other regions requires two steps:
Many legends from different cultures share the idea that jewels are of divine or superhuman origin.
A normal person leading a full life can experience events related to death, family changes, job changes, health issues, and financial swings. Each experience is connected to the other experiences and is not isolated, making the impact on the person varied and complex.
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