FoundationDB Record Layer • Hacker News Board

Re: FoundationDB Record Layer

#81

Post by techie128 » Tue, Jan 15, 2019, 11:59 PM UTC

ddorian43 wrote: post #56

techie128 wrote: post #25

Earlier quoted context omitted.

"Probably async"? Could you expand on it?

To achieve "availability", cassandra lowers consistency, making dev's life extremely hard. Long: https://docs.yugabyte.com/latest/comparisons/cassandra/ TLDR: google/fb/etc went the other way, using hbase,bigtable witch are strongly consistent.

Cassandra has monotonic reads so it is strongly consistent as long as you have a quorum of nodes. I haven't yet read the link you posted but it's coming from a vendor that is aiming to replace Cassandra so I'll take it a pinch of salt.

Re: FoundationDB Record Layer

#82

Post by ddorian43 » Wed, Jan 16, 2019, 12:56 AM UTC

techie128 wrote: post #81

ddorian43 wrote: post #56

Earlier quoted context omitted.

To achieve "availability", cassandra lowers consistency, making dev's life extremely hard. Long: https://docs.yugabyte.com/latest/comparisons/cassandra/ TLDR: google/fb/etc went the other way, using hbase,bigtable witch are strongly consistent.

Cassandra has monotonic reads so it is strongly consistent as long as you have a quorum of nodes. I haven't yet read the link you posted but it's coming from a vendor that is aiming to replace Cassandra so I'll take it a pinch of salt.

No salt required. You can replace it with any strongly consistent system that has transactions and it's the same.

Re: FoundationDB Record Layer

#83

Post by ubershmekel » Wed, Jan 16, 2019, 4:19 AM UTC

gshack wrote: post #48

mastox wrote: post #46

Earlier quoted context omitted.

recruitment?

Surely not apple has an issue with it

I'm sure they're good, but better is better.

Re: FoundationDB Record Layer

#84

Post by ta7756 » Wed, Jan 16, 2019, 8:52 AM UTC

ddorian43 wrote: post #82

techie128 wrote: post #81

Earlier quoted context omitted.

Cassandra has monotonic reads so it is strongly consistent as long as you have a quorum of nodes. I haven't yet read the link you posted but it's coming from a vendor that is aiming to replace Cassandra so I'll take it a pinch of salt.

No salt required. You can replace it with any strongly consistent system that has transactions and it's the same.

I see. Has Amazon replaced Dynamo with Postgres? Has Google replaced BigTable with MySQL?

Re: FoundationDB Record Layer

#85

Post by ddorian43 » Wed, Jan 16, 2019, 9:03 AM UTC

ta7756 wrote: post #84

ddorian43 wrote: post #82

Earlier quoted context omitted.

No salt required. You can replace it with any strongly consistent system that has transactions and it's the same.

I see. Has Amazon replaced Dynamo with Postgres? Has Google replaced BigTable with MySQL?

Dynamo sucks. BigTable IS strongly consistent. https://ai.google/research/pubs/pub41344 F1 DB from google. Facebook uses MySQL. DynamoDB IS built on top of Mysql/Innodb.