Excellent! I'm looking forward to that improvement! Sent from my iPhone
> On Jan 21, 2015, at 17:28, Chris Vest <[email protected]> wrote: > > You won’t be able to do reads without a transaction, but once you have a > transaction we only take a minimum amount of locks for reads. > > The object cache does some locking when it loads up missing bits, or when it > receives updates from write transactions. The object caches, other than > ’none’, has a ConcurrentHashMap inside of them, which uses locks for > thread-safety. Those locks are only held for very short periods of time, > though, like for keeping out writes to the internal map-segment of interest > while doing a look-up. > > The new page cache will also be doing some locking when it page faults, or > when it has to coordinate with writing transactions, or with evictions. > However, when none of these things are going on, the page cache can do reads > using only a couple of optimistic read-locks. These are as cheap as a couple > of volatile-field reads and some bit twiddling. > > Read-only transactions are otherwise effectively lock-free in 2.2, when > everything is in memory and you don’t have interference from any write > transactions. > > -- > Chris Vest > System Engineer, Neo Technology > [ skype: mr.chrisvest, twitter: chvest ] > > >> On 21 Jan 2015, at 22:37, Clark Richey <[email protected]> wrote: >> >> Will the upcoming 2.2 release support reading without a locking transaction? >> >> Thanks! >> >> - Clark Richey >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Neo4j" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> For more options, visit https://groups.google.com/d/optout. > > -- > You received this message because you are subscribed to the Google Groups > "Neo4j" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "Neo4j" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
