In the last interview, Ali knelt on Redis! Feel free to submit a few, and see if everyone can answer:
- Why is redis key and value, and why doesn't it support SQL?
- Is redis multi-threaded or single-threaded? (Please go back for the single-threaded answer, why please go back, please read on)
- The persistence of redis enables the restart service under RDB and AOF how to load? (10 people have 9 wrong answers)
- How to plan for redis cluster? How is AKF/CAP realized and designed?
- How to store the login status of 100,000 users 365 days a year with redis and quickly retrieve the active users in any time window?
- How many of the five value types of redis have you used, can you give an example?
- 1 million concurrent 4G data, 100,000 concurrent 400G data, how to design Redis storage method?
Excellent as I was stepped on the ground by the interviewer
When Ali’s cousin found out, he threw me a Redis note and told me that after reading it, he still couldn’t enter Ali, so he went back to sell tofu.
After being "encouraged" by my cousin, I finally managed to get Ali's offer, avoiding the hard life of going back to sell tofu. Here is the note my cousin gave me!
Redis notes
Opening: What can Redis be used for?
Foundation: Redis basic data structure
Due to the limited space of the platform, only part of the content and screenshots of the catalog can be displayed . Friends in need can get them for free after one-click triple connection, see the picture below and add the assistant VX (gyhycx7980)!
Application 1: Distributed lock
Application 2: Delay queue
Application 3: Bitmap
Application 4: HyperLogLog
Application 5: Bloom filter
Application 6: Simple current limiting
Application 7: Funnel current limit
Application 8: GeoHash
Application 9: Scan
Due to the limited space of the platform, only part of the content and screenshots of the catalog can be displayed . Friends in need can get them for free after one-click triple connection, see the picture below and add the assistant VX (gyhycx7980)!
Principle 1: Threaded IO model
Principle 2: Communication protocol
Principle 3: Endurance
Principle 4: Pipelines
Principle 5: Transactions
Principle 6: PubSub
Principle 7: Small object compression
Principle 8: master-slave synchronization
Due to the limited space of the platform, only part of the content and screenshots of the catalog can be displayed . Friends in need can get them for free after one-click triple connection, see the picture below and add the assistant VX (gyhycx7980)!
Cluster 1: Sentinel
Cluster 2: Codis
Cluster 3: Cluster
Extension 1: Stream
Extension 2: Info command
Expansion 3: Talk about distributed locks again
Extension 4: Expiration strategy
Expansion 5: LRU
Extension 6: Lazy delete
Extension 7: Use Jedis gracefully
Extension 8: Protect Redis
Extension 9: Redis secure communication
Due to the limited space of the platform, only part of the content and screenshots of the catalog can be displayed . Friends in need can get them for free after one-click triple connection, see the picture below and add the assistant VX (gyhycx7980)!
Source code 1: Explore the internal structure of "string"
Source code 2: Explore the interior of the "dictionary"
Source code 3: Explore the inside of the "compressed list"
Source code 4: Explore the "quick list"
Source code 5: Explore the internal structure of the "jump list"
Source code 6: Explore the "compact list" internals
Source code 7: Explore the internals of the "radix tree"
Due to the limited space on the platform, there are more reasons, and more content can’t be displayed. Friends in need can help you with one-click triple connection, see the picture below and add the assistant VX (gyhycx7980) to get it for free!