Week 12B Flashcards
1
Q
data compaction vs data compression
A
copact = lossless
compression = lossy
2
Q
what does a bloom filter test for
A
the element is either
definitly not in the set
might be in the set
3
Q
basic needs of a sys like amazon or similar
A
highly availble sys with failure resilience
failure handling shouldnt impact availablity or performance
4
Q
why does amazon not store state in relational database
A
functionality of RDBMS not required for amazon tasks
store and retreive data by primary key
doesnt require complex querying and management
5
Q
hwo does synamo parition
A
thorugh hashing
6
Q
consistant hashing vs non-consistant hashing
A
when a non-consistant hash table is resized it needs to rehash complete table
7
Q
A
