Thanks Patrik! I will read though the snapshot docs. Good to know the answer was none of the above :)
On Mon, Jun 19, 2017 at 2:45 PM, Patrik Nordwall <[email protected]> wrote: > ORMap and ORMultiMap have support for deltas. Nested deltas can be > difficult so the current implementation is sending the full state of the > changed entry of the ORMap, i.e. the 1000 items of the "a" ORSet in your > example. There is variant of ORMultiMap that supports nested deltas but > it has some other drawbacks as described in the (to be released) > documentation: http://doc.akka.io/docs/akka/snapshot/ > scala/distributed-data.html#maps > > Cheers, > Patrik > > On Sun, Jun 18, 2017 at 7:27 PM, 'Michal Borowiecki' via Akka User List < > [email protected]> wrote: > >> ORMap and ORMultiMap don't mention delta support. On the contrary, docs >> for Maps say: >> >> When a data entry is changed the full state of that entry is replicated >> to other nodes, i.e. when you update a map the whole map is replicated. >> Therefore, instead of using one ORMap with 1000 elements it is more >> efficient to split that up in 10 top level ORMap entries with 100 >> elements each. Top level entries are replicated individually, which has the >> trade-off that different entries may not be replicated at the same time and >> you may see inconsistencies between related entries. Separate top level >> entries cannot be updated atomically together. >> >> The only way I can read it is that in your case the entire map with 5000 >> entries will be replicated. >> >> Thanks, >> Michał >> >> >> On 18/06/17 18:00, Mushtaq Ahmed wrote: >> >> Suppose there is an ORMultiMap with 5 keys, each pointing to an ORSet of >> size 1000 items. Given that ORSet is a delta-CRDT, which one of the >> following happens on ORMultiMap.addBinding("a", 4) operation: >> >> 1. Entire map with 5000 entries will be replicated. >> 2. Only the delta of the ORSet (against key "a") is replicated. >> >> Thanks. >> >> -- >> >>>>>>>>>> Read the docs: http://akka.io/docs/ >> >>>>>>>>>> Check the FAQ: http://doc.akka.io/docs/akka/c >> urrent/additional/faq.html >> >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user >> --- >> You received this message because you are subscribed to the Google Groups >> "Akka User List" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To post to this group, send email to [email protected]. >> Visit this group at https://groups.google.com/group/akka-user. >> For more options, visit https://groups.google.com/d/optout. >> >> >> -- >> <http://www.openbet.com/> Michal Borowiecki >> Senior Software Engineer L4 >> T: +44 208 742 1600 <+44%2020%208742%201600> >> >> >> +44 203 249 8448 <+44%2020%203249%208448> >> >> >> >> E: [email protected] >> W: www.openbet.com >> OpenBet Ltd >> >> Chiswick Park Building 9 >> >> 566 Chiswick High Rd >> >> London >> >> W4 5XT >> >> UK >> <https://www.openbet.com/email_promo> >> This message is confidential and intended only for the addressee. If you >> have received this message in error, please immediately notify the >> [email protected] and delete it from your system as well as any >> copies. The content of e-mails as well as traffic data may be monitored by >> OpenBet for employment and security purposes. To protect the environment >> please do not print this e-mail unless necessary. OpenBet Ltd. Registered >> Office: Chiswick Park Building 9, 566 Chiswick High Road, London, W4 5XT, >> United Kingdom. A company registered in England and Wales. Registered no. >> 3134634. VAT no. GB927523612 >> >> -- >> >>>>>>>>>> Read the docs: http://akka.io/docs/ >> >>>>>>>>>> Check the FAQ: http://doc.akka.io/docs/akka/c >> urrent/additional/faq.html >> >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user >> --- >> You received this message because you are subscribed to the Google Groups >> "Akka User List" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To post to this group, send email to [email protected]. >> Visit this group at https://groups.google.com/group/akka-user. >> For more options, visit https://groups.google.com/d/optout. >> > > > > -- > > Patrik Nordwall > Akka Tech Lead > Lightbend <http://www.lightbend.com/> - Reactive apps on the JVM > Twitter: @patriknw > > -- >>>>>>>>>> Read the docs: http://akka.io/docs/ >>>>>>>>>> Check the FAQ: >>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user --- You received this message because you are subscribed to the Google Groups "Akka User List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/akka-user. For more options, visit https://groups.google.com/d/optout.
