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Open-source graph database, built for real-time streaming data, compatible with Neo4j.
1,222 Commits 247 Branches 35 Tags 62 MiB
C++ 70.6%
Python 14.1%
Gherkin 6.7%
Shell 2.9%
Common Lisp 1.5%
Other 4.2%
5066b1b80d
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florijan 5066b1b80d BuildIndex now iterates over less vertices 
Summary:
Measured improvements in a test scenario with 4 labels, 1M vertices for each label:
Old code: ~2.5 seconds per index
New code: ~1.5 seconds per index

When building an index for a non-existing label the updated code is done immediately. The old code depends on the number of vertices in the database.

The new code *could* be slower when building an index for a label that has a lot of vertices, and the index is not garbage collected recently and contains a lot of junk. This can be avoided by a simple check in the `BuildIndex` function (if label_index cardinality > total cardinality), if you like.

Reviewers: buda, mislav.bradac, teon.banek

Reviewed By: mislav.bradac

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D767
2017-09-08 13:05:09 +02:00
cmake Make GNU Readline dependency optional 2017-03-24 12:42:45 +01:00
config Use 1 worker in benchmarks 2017-08-29 12:35:34 +02:00
docs Workin progress. v0.7.0 docs update + update script. 2017-09-07 09:46:55 +02:00
experimental Distributed Memgraph with Reactors (first queries) 2017-08-25 15:26:10 +02:00
libs Reduced libs/setup.sh wget verbosity. 2017-09-06 13:39:54 +02:00
poc utils::auto_scope refactor 2017-08-11 09:43:10 +02:00
release Remove LOG_NO_STDOUT flag 2017-08-24 10:45:35 +02:00
src BuildIndex now iterates over less vertices 2017-09-08 13:05:09 +02:00
tests BFS feature test that uses edges added 2017-09-08 13:03:57 +02:00
tools Harness MATCH tests refactored 2017-09-07 12:05:05 +02:00
.arcconfig Set arc.land.onto.default to dev 2017-03-03 13:33:45 +01:00
.clang-format Query - LogicalOp - visitable bug fix 2017-03-22 14:14:01 +01:00
.gdbinit Add pretty printer to gdb for TypedValue 2017-08-16 11:32:25 +02:00
.gitignore Removed Double Locking, Simplified Ownership or LocalEventStream, .... 2017-08-04 17:58:22 +02:00
.ycm_extra_conf.py Adding callback by type (Work in Progress) 2017-08-08 15:56:49 +02:00
CHANGELOG.md Fixed bolt decoder chunked buffer implementation. 2017-09-06 13:19:42 +02:00
CMakeLists.txt Inline filter inside ExpandVariable 2017-08-30 16:23:16 +02:00
coverage Silence ctest when running for coverage 2017-06-13 11:54:43 +02:00
Doxyfile Enable AUTOBRIEF for doxygen 2017-06-02 08:59:49 +02:00
Doxylogo.png Doxygen setup 2016-12-20 15:49:52 +01:00
format Migrate command line args to gflgs in tests 2017-07-06 13:54:12 +02:00
init Remove unnecessary requirements 2017-08-28 10:19:14 +02:00
install_neo NeoRunner + Harness bugfix 2017-07-29 17:46:24 +02:00
llvm-gcov memgraph coverage (lcov setup in progress...) 2017-03-07 18:27:03 +01:00
README.md Migrate command line args to gflgs in tests 2017-07-06 13:54:12 +02:00

README.md

memgraph

Memgraph is an ACID compliant high performance transactional distributed in-memory graph database featuring runtime native query compiling, lock free data structures, multi-version concurrency control and asynchronous IO.

dependencies

Memgraph can be compiled using any modern c++ compiler. It mostly relies on the standard template library, however, some things do require external libraries.

Some code contains linux-specific libraries and the build is only supported on a 64 bit linux kernel.

  • linux
  • clang 3.8 (good c++11 support, especially lock free atomics)
  • antlr (compiler frontend)
  • cppitertools
  • fmt format
  • google benchmark
  • google test
  • glog
  • gflags