Questions tagged [in-memory-data-grid]
26 questions
12
votes
1 answer
HazelcastInstance vs HazelcastClient
I am novice in hazelcast and I have a few questions.
As I understand hazelcast comes with two entities HazelcastInstance(as I understand it is server) and HazelcastClient.
These entities even packed into different jars.
I have noticed that in our…
gstackoverflow
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6
votes
3 answers
Apache Ignite vs redis cluster(use partition) vs other solution
Hi I looking for In memory data grid or similar one.
My use case.
Data griding in memory. scale out available.
backup node available.
persistent backup available.
(optional) free or opensource solution
I did googling and I found candidates below
-…
moon
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3
votes
4 answers
Problem on running Hazelcast demo application
I am new to in-memory data grid and Hazelcast. I was trying on the demo application on the offical website.
https://training.hazelcast.com/demo-getting-started-with-hazelcast-imdg/277088/scorm/f2u8hre5zf9p
It mentioned that on running the…
Patrick C.
- 1,339
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2
votes
2 answers
Apache Ignite vs GridGain?
I can't understand for difference between Apache Ignite and GridGain platform. They are equals? Or GridGain is a standard that implemented by Apache Ignite?
Alireza Alallah
- 2,486
- 29
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1
vote
1 answer
Loading a GRIB from the web in Python without saving the file locally
I would like to download a GRIB file from the web:
Opt1: https://noaa-gfs-bdp-pds.s3.amazonaws.com/gfs.20210801/12/atmos/gfs.t12z.pgrb2.1p00.f000
Opt2:…
Jeremy
- 11
- 1
1
vote
1 answer
In-memory Database that Sync with a Central Database
Scenario: Hundreds of nodes running an HTTP server responding to time-critical requests (requests must be processed and a response must be sent back within milliseconds eg. 50 milliseconds max). Each server will serve about 500 requests per second…
Anuruddha Hettiarachchi
- 84
- 1
- 5
1
vote
2 answers
Hazelcast serializer/deserializer
How to configure serializer/deserializer at the cluster level. I am able to set the serializer/deserializer at client level using the following Java code.
ClientConfig clientConfig = new ClientConfig();
SerializerConfig userDataSerializer =…
NPS
- 93
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1
vote
1 answer
Checking if all QueryCaches received updates from IMap in a Hazelcast cluster
Having a Hazelcast cluster, how do I make sure that the changes I made to an IMap are completely propagated to QueryCaches on all of the cluster nodes, before I invoke an EntryProcessor that uses the changed data from those QueryCaches?
A simplified…
Wojciech Gdela
- 359
- 2
- 9
1
vote
1 answer
Import data from database to GemFire
I'am working on a project with GemFire.
To import data from database to GemFire, i did a java program that connects to database and to GemFire and then i select data from database and put
it in GemFire region.
I want to know if there is another…
I.Scale
- 35
- 5
0
votes
1 answer
Does Apache Ignite really need to use the very old version of sqlline which has issues & missing certain features?
I see that Apache Ignite (and the GG editions for that matter) uses a very old version of sqlline which has issues & missing certain features. The version used is 1.3.0 which is from 2017, whereas the latest version is 1.12.0.
The reason this comes…
lmk
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0
votes
1 answer
Is there embedded replicated map solution with 'read your writes' guaranties and async updates propagation of frequently changed data?
Hello and thanks in advance!
Question In short:
Is there embedded replicated map solution with 'read your writes' guaranties and async updates propagation of frequently changed data?
Description:
System comprised with two services (just for…
Timur Efimov
- 358
- 2
- 10
0
votes
1 answer
How to use redisson and keep microservices architecture tight
We have services A, B and C.
Service C is connected to Redis while Services A & B (via API) requesting objects from service C
We dont want to share C's redis with A & B (straight forward) to keep the datasource isolation rule.
The disadvantage that…
rayman
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0
votes
1 answer
How can a person get help in learning Redis Online
I have visited Redis official website and more other platforms for the tutorials but still I am unable to installation of Redis (in-memory data structure store).
The README.md file at Github is also failed to let me complete install and play with…
0
votes
1 answer
How to create asynchronous backups of shared data structures in hazelcast?
I'm trying to add x number of objects via a simple for-loop to a distributed hazelcast queue (IQueue).
HazelcastInstance hazelcastInstance = Hazelcast.newHazelcastInstance();
BlockingQueue configs =…
cobby
- 484
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0
votes
1 answer
Is it overkill to hide Hazelcast / Redis behind a REST controller
We are using In memory data store possibly Hazecast or Redis (technology is undecided yet) Predominantly the in memory data store would be used as Cache provider , but also as computing platform for running some analytics. Hazelcast / Redis…
Alexander Petrov
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