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Publish block when over the memory / disk threshold
Hi, we are migrating from rabbit to solace now. There is a feature (https://www.rabbitmq.com/alarms.html) RabbitMQ will block connections that publish messages when over the memory/disk threshold. I see there is a way to set the threshold in solace: https://docs.solace.com/Monitoring/Configuring-System-Event-Thresholds.htm…
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C# library is allocation heavy on the Send() for message arrays, any chance for improvement?
I have market data app that uses 3rd party C++ library that I wrapped in native C interface and I'm using it in C# app. I exchange memory between native and managed with zero allocations and copies using all the latest and greatest stuff C# has to offer at .NET 6 level. But Solace C# client library is lighting up my…
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High disk usage
There was no consumer connection to the Queue, resulting in an increase in the current spooled messages. My question is, will the increase in current spooled messages also result in a corresponding increase in disk read usage? Someone please confirm? I have attached a graph for more details.
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PERFORMANCE! Why you should use Message.reset() in Solace APIs..!
Hi Developers! Want to go fast? Faster, anyway? Read on... I'm just putting the finishing touches on a new bunch of Solace Java (JCSMP) samples, and have been doing a bit of performance testing with them. They are still meant to be fairly simple and straightforward, and don't try to maximize absolute throughput…
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Spring Cloud Stream | Batch | TPS | Tuning
In our micro service, we are using solace binder with SCS, during non-functional testing we found some differences in performance, Could you please help to understand. service - Processor is used. The TPS is approx 200 TPS. Function<Message<List<String>>, Collection<Message<SafeStoreObject>>> receiveMessage() The…
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Tuning pre-fetch for load balancing in Python
Hi Team, I have built a system comprised of a number of workers, N, (or application processing engines) fed by a single non exclusive queue. Each job on the queue either takes between 20 second and a minute to complete or under 0.1 seconds (because the job on the queue requires no work). Ideally if there are 3 workers (so…
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Slow Subscriber
Hi, I want to identify slow subscriber client in my sandbox environment. This is to mock or test when a client is marked as a slow consumer. Currently our slow subscriber panel in Grafana shows all clients as normal (i.e. 0 = not slow subscriber). Can anyone please suggest how this can be replicated in test environment ?…
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Approaches to consume the data from solace queues on need basis.
Hi Team, Could anyone share the solution approach for consuming the data from solace queues whenever it is needed. Lets says every 12 hrs or 24 hrs, the time frame might change as per the need. I am more looking in to pull mechanism, unlike RDP( Push). We have also MuleSoft in the approach, any feasible solutions is much…
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How to ack message?
Hi, I am using JCSMP 10.9.1 API in my code. I want to control the acki'ng of the messages on the consumer side instead of relying on auto_ack. So, I set the message ack mode to client_ack. And I am calling message.ackMessage() after every 1000 message. However, after 20000 number of messages, my consumer stops getting…
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Slow subscriber causing solace spool quota blow up
Hi Solace experts - I am new to solace world and getting to know things. We have solace set up in our application platform and it has been running fine for few weeks. As client applications are increased, we see some slow subscribers in solAdmin tool. The delivery mode set up is "DIRECT" and the client apps subscribe to…
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What is the expected outcome if failover happens while replay is in progress
Hi, Consider a scenario where a Queue listener (JCSMP) is listening with CLIENT_ACK, typically a slow consumer processing the messages in the queue at a rate slower than producer in a guaranteed messaging approach with replay enabled. What happens if failover is triggered while replay is in progress on a slow consumer…
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Initial latency observed up to 5 minutes with JCSMP clients
Hi, I have a performance test setup in which ingesting 100 messages per second from 10 threads at 100 ms interval. As per my observation, the initial Producer to Consumer latency (Producer -> Broker -> Consumer) is observed as 5 minutes. And, it keeps decreasing and reaches to nano seconds latency within 5 minutes.…
