> On Jul 2, 2015, at 6:23 AM, Jan Lehnardt <j...@apache.org> wrote: > > >> On 02 Jul 2015, at 12:19, Hermann Norpois <hnorp...@gmail.com> wrote: >> >> Hello, >> >> how does couchdb parse the json-documents? Which tool is used? Is it a >> known library or is it a couchdb built in function? > > We use https://github.com/apache/couchdb-jiffy a C-implementation of a JSON > parser. > > Although there is now a discussion to move back to mochijson2, which is > native Erlang: https://issues.apache.org/jira/browse/COUCHDB-2732 > > Best > Jan > —
(moving to dev@) Hiya Jan, we could be discussing a jiffy -> mochijson2 switch, but that’s not the topic of COUCHDB-2732. The issue there is the locking required by the NIF we use for JSON _collation_, which is something Filipe wrote for us back in COUCHDB-1186. On the topic of JSON collation, the findings by the IBM team are that pure Erlang collation outperforms the existing NIF, but that a NIF taking advantage of thread local storage is better still. Cheers, Adam
