In caching strategies, what is meant by 'cache warming'?
- Caching based on user preferences
- Clearing cache to improve performance
- Dynamically adjusting cache size
- Pre-loading cache with frequently used items
'Cache warming' in caching strategies refers to pre-loading the cache with frequently used items, optimizing performance by ensuring that the cache is populated with data that is likely to be requested.
What is a 'Content Delivery Network (CDN)' and how does it relate to caching?
- A mechanism for cache synchronization
- A protocol for cache communication
- A type of caching algorithm
- Network of distributed servers for content delivery
A 'Content Delivery Network (CDN)' is a network of distributed servers designed to deliver content efficiently. It relates to caching by strategically placing content on servers closer to end-users, reducing latency and improving performance through localized caching.
The _________ pattern in caching involves generating and storing the results of a request before it's actually made.
- Cache-Aside
- Read-Through
- Write-Behind
- Write-Through
The Cache-Aside pattern involves generating and storing the results of a request before it's actually made.
_________ caching is a strategy where each cache stores a subset of the total data set, typically based on geographical location.
- Distributed
- Global
- Local
- Replicated
Local caching is a strategy where each cache stores a subset of the total data set, typically based on geographical location.
The process of replacing older cache entries with new ones is known as __________.
- Clear
- Eviction
- Purge
- Swap
The process of replacing older cache entries with new ones is known as Eviction.
In caching, __________ refers to the technique of dynamically adjusting the cache size based on current system load.
- Adaptive Caching
- Dynamic Caching
- Incremental Caching
- Static Caching
Adaptive Caching involves dynamically adjusting the cache size based on the current system load, allowing for optimal performance under varying conditions.
The strategy of storing only the differences from the main data set in cache is known as __________ caching.
- Delta
- Differential
- Incremental
- Patch
Differential caching involves storing only the differences (or changes) from the main data set in the cache, reducing storage requirements and improving cache efficiency.
A web application implements a caching layer to reduce database load. Over time, the cache starts serving stale data. What caching strategy should be implemented to resolve this?
- Eviction Policies
- Lazy Loading
- Time-to-Live (TTL) caching
- Write-Through Caching
Implementing Time-to-Live (TTL) caching allows data to be cached for a specific duration, after which it is considered stale and refreshed, resolving the issue of serving stale data over time.
A high-traffic website uses a cache that frequently encounters 'cache churn'. What strategy can be used to minimize this effect?
- Bloom Filters
- Cache Sharding
- Least Recently Used (LRU) Caching
- Write-Behind Caching
Using Least Recently Used (LRU) caching strategy helps minimize cache churn by retaining frequently used items in the cache and discarding the least recently used ones, optimizing cache efficiency for a high-traffic website.
An online content platform uses caching to improve user experience. However, users in different regions report varying latency. What caching approach can be adopted to optimize for all users?
- Content Delivery Network (CDN) Caching
- Local Caching
- Proxy Caching
- Write-Through Caching
Adopting Content Delivery Network (CDN) caching helps optimize user experience for users in different regions by distributing cached content to edge servers, reducing latency and enhancing content delivery speed globally.