It leads to performance advantages to ArangoDB in comparison to the “layered” approaches. In ArangoDB, there is no “switching” between data models, and there is no shifting of data from A to B to execute queries. With ArangoDB, the same core with the same query language, one can club together different data models and features in a single query, as we have already stated in previous section. Many database vendors call their product “multi-model,” but adding a graph layer to a key/value or document store does not qualify as native multi-model. In this section, we will highlight a crucial difference between native and layered multimodel databases. And, owing to its multi-model style, one can make lean applications, which will be scalable horizontally with any or all of the three data models. Moreover, different models can be combined in a single query. And with a single declarative query language, any or all of your data can be accessed. In this database, the data can be stored as documents, key/value pairs or graphs. Subsequent requests will try to use the same connection and get the same SocketException (Connection reset).ArangoDB is hailed as a native multi-model database by its developers. Then the catch block executes messageStore.clear(e) which throws an exception too, and the connection is not closed. In our scenario, readChunk() throws a SocketException (Connection reset). We suspect it may be related to the fact that we use Docker ( ), but it is also somehow influenced by the database and driver versions (using ArangoDB 3.3.16 and driver 5.0.1, it used to happen after a long period of inactivity, but after upgrading it happens randomly during normal use).Īs for 2, it may be related to how the message store used by VstConnection is cleared in case of errors. After the first failed request, all subsequent requests will fail.Īs for 1, we could not assess why this happens.Actually, in our case the issue can be split in two: Hi, we encountered a similar problem too. `Caused by: : : : Connection resetĪt .report(FutureTask.java:122) ~Īt .get(FutureTask.java:192) ~Īt .(VstConnectionSync.java:99) ~Ĭaused by: : : Connection resetĪt .(MessageStore.java:73) ~Īt .internal.VstConnectionSync$1.call(VstConnectionSync.java:93) ~Īt .internal.VstConnectionSync$1.call(VstConnectionSync.java:90) ~Īt .run(FutureTask.java:266) ~Īt .(MessageStore.java:96) ~Īt .internal.VstConnection$1.call(VstConnection.java:150) ~Īt .internal.VstConnection$1.call(VstConnection.java:124) ~Īt .runWorker(ThreadPoolExecutor.java:1142) ~Īt $n(ThreadPoolExecutor.java:617) ~Ĭaused by: : Connection resetĪt (SocketInputStream.java:209) ~Īt (SocketInputStream.java:141) ~Īt .readFully(InputRecord.java:465) ~Īt .read(InputRecord.java:503) ~Īt .readRecord(SSLSocketImpl.java:973) ~Īt .readDataRecord(SSLSocketImpl.java:930) ~Īt .read(AppInputStream.java:105) ~Īt .(VstConnection.java:260) ~Īt .(VstConnection.java:254) ~Īt .(VstConnection.java:231) ~Īt .internal.VstConnection$1.call(VstConnection.java:141) ~ Connection to arangoDB is getting reset frequently.
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