Session
- Stores user login info for a limited time.
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JOIN
- Merges related data from two or more tables.
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Cookie
- Keeps track of users between visits.
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Index
- Improves performance of database queries.
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API Key
- A unique key used to access protected APIs.
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Rate Limiter
- Protects servers from overload by limiting requests.
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Load Balancer
- Distributes network requests evenly between multiple servers.
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Error Handling
- Prevents crashes by responding gracefully to mistakes.
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WebSocket
- Keeps clients and servers connected for instant updates.
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