Cache is your best friend
- 1. Cache is your Best Friend NishantKumarBehl
- 2. Why Cache If you believe SPEED is everything , Cache is your best friend If you have COST optimization mindset, Cache is your best friend If your customers patience level is low, Cache is your best friend If you are designing a well DISTRIBUTED architectural solution, Cache is your best friend If you have future growth in your mind, Cache is your best friend If you are a SMART Engineer, Cache is your best friend
- 3. What is Cache Cache is a component that stores data to be re-used Cache is faster in providing data Cache can be a hardware or software component Yes you can read and write into Cache, just in case you are wondering
- 4. So Why Cache is faster Its Simply because its just a subset of the data that is predicted to be used more frequently and in more volume than rest of the data
- 5. How does it work Afterall
- 6. Limitations of Cache You will always have a limited space or memory for your Cache You need to be very smart for effective use of Cache
- 7. Popular Caching Areas CDN (Content Delivery Network) caching Database caching Client caching Web caching Application caching
- 8. Types of Cache Below is how I Categorize Cache Types Software Cache In-Network Cache Hardware Cache
- 9. Software Cache WEB CACHE DISK CACHE MEMORIZATION
- 10. In-Network Cache INFORMATION – CENTRIC NETWORKING LEAST RECENTLY USED ALGORITHM
- 11. Hardware Cache CPU – Central Processing Unit cache GPU – Graphics Processing Unit cache DSP – Digital Signal Processors cache
- 12. Cache Policies Write-Through : Only Cache interacts with database in synchronous fashion Write – Aside : Cache does not interact directly with database Write – Back : Application writes into the cache and database in asynchronous manner Refresh-ahead : Cache Automatically refreshes itself
- 13. Few Important details about Application Caching Popular key value stores – Memcached and Redis Object Level Caching – treat data as object and cache it Query Level Caching – Hash the key, store results into the cache
- 14. Careful about this Cache Invalidation is many times complex problem to solve Application needs to be modified if changing cache type Consistency maintenance is a huge overhead
- 15. What I got from this Presentation Clarity and refresher on Cache