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ArangoDB 2.8 API Changes: What You Need to Know
There are a few API changes coming in the next 2.8 release. Please have a look if you contribute to a language driver or client-side query builder for ArangoDB.
AQL Function Speedups: ArangoDB 2.8 Enhancements
While working on the upcoming ArangoDB 2.8, we have reimplemented some AQL functions in C++ for improved performance. AQL queries using these functions may benefit from using the new implementation of the function. The following list shows the AQL functions for which a C++ implementation has been added in 2.8. The other C++-based AQL function…
ArangoDB 2.7.2: Replication Improvements
ArangoDB 2.7.2 comes with replication improvements and some bug fixes. You can download the latest version from our download page. Replication improvements: added autoResync configuration parameter for continuous replication.
Using Multiple Indexes per Collection in ArangoDB
The query optimizer in ArangoDB 2.8 has been improved in terms of how it can make use of indexes. In previous versions of ArangoDB, the query optimizer could use only one index per collection used in an AQL query. When using a logical OR in a FILTER condition, the optimizer did not use any index…
Index Speedups in ArangoDB 2.8: Enhancements
The upcoming 2.8 version of ArangoDB will provide several improvements in the area of index usage and query optimization. First of all, hash and skiplist indexes can now index individual array values. A dedicated post on this will follow shortly. Second, the query optimizer can make use multiple indexes per collection for queries with OR-combined…
Foxx Module Resolution Changes in ArangoDB 2.8
The implementation of the JavaScript require function will be adjusted to improve compatibility with npm modules. The current implementation in 2.7 and earlier versions of ArangoDB strictly adheres to the CommonJS module standard, which deviates from the behaviour implemented in Node and browser bundlers. Module paths will now be resolved in the following ways:
Enhanced Deadlock Detection: Improving ArangoDB Performance
The upcoming ArangoDB version 2.8 (currently in devel) will provide a much better deadlock detection mechanism than its predecessors. The new deadlock detection mechanism will kick in automatically when it detects operations that are mutually waiting for each other. In case it finds such deadlock, it will abort one of the operations so that the…
Using Bind Parameters in the AQL Editor: ArangoDB
The AQL editor in the web interface is useful for running ad hoc AQL queries and trying things out. It provides a feature to explain the query and inspect its execution plan. This can be used to check if the query uses indexes, and which. So far the AQL editor only supported using query string…
ArangoDB 2.7.1: Latest Enhancements & Fixes
In the first maintenance release of ArangoDB 2.7 we have switched from readline to linenoise ng for line-editing and history capabilities on the command line. Furthermore, the AQL function MERGE() improved, now working on a single array parameter, too. This allows combining the attributes of multiple objects from an array into a single object, e.g.:
Benchmark: PostgreSQL, MongoDB, Neo4j, OrientDB and ArangoDB
The latest edition of the NoSQL Performance Benchmark (2018) has been released. In this blog post – which is a roundup of the performance blog series – I want to complete the picture of our NoSQL performance test and include some of the supportive feedback from the community. First of all, thanks for all your…