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Amazon Aurora Performance, as a NoSQL store | Blog of Christian Felde
I’ve written previously about both Amazon Aurora and DynamoDB, and the massive price difference between them. To recap, with some back of the envelope calculations, based on the limited Aurora information available, DynamoDB was found to be 28 times more costly. At that point it becomes worthwhile to look at alternatives. So here’s one alternative: Instead of using DynamoDB, use Amazon Aurora, and
yass 2015/11/06
" A db.r3.8xlarge was able to do 1639 puts per second and 6900 gets per second. If we ran a db.r3.8xlarge it would cost us $4.64/hour in US East, or about $3390 per month. The same performance on DynamoDB, given 64 kB blobs would almost be a whopping $60k per month! "

aurora

DynamoDB

comparison
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Only the Good Die Young (or Move Off-heap?) | Blog of Christian Felde
yass 2014/08/31
"keep only a few private fields, 2 ints + 2 longs + 2 object references (Unsafe and a hash function), for the duration of the instance. The rest are short lived or managed off-heap. / BOHMap must do more work than the standard HashMap, since it needs to copy data between on-heap and off-heap memory"

java

gc

offheap

unsafe

hashtable

binary

java8

serialize
リンク
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