General 3

• What is PubNub?
• Where do I get started learning PubNub?
• What is a channel?

Channels 5

• What happens to messages published when no one is listening?
• What are valid channel names?
• Can PubNub support millions of users and millions of channels?
• How do I open connections to two channels in JavaScript?
• How many channels can I use?

Advanced Topics 22

• Does PubNub support the UDP protocol?
• Why use PubNub rather than push notifications?
• How do I set the UUID?
• Does PubNub use a lot of battery power?
• How do I check network connectivity?

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Security 12

• Can I hide my application keys?
• What encryption mode does AES use?
• Can I whitelist IPs for PubNub traffic?
• Can I restrict subscribers by IP or URL?
• Is PubNub blocked by firewalls or antivirus software?

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