# Solace Event Broker **URL:** https://community.solace.com/c/event-broker/6.md?page=1 [Latest](https://community.solace.com/latest.md) · [Categories](https://community.solace.com/categories.md) · [Tags](https://community.solace.com/tags.md) **Page:** 2 --- ## [Selectors - discouraged, but is there field that would be fast?](https://community.solace.com/t/selectors-discouraged-but-is-there-field-that-would-be-fast/4727)
**Author:** [@radoslaw](https://community.solace.com/u/radoslaw)\ **Replies:** 2\ **Last updated:** [January 20, 2026, 4:33pm UTC](https://community.solace.com/t/selectors-discouraged-but-is-there-field-that-would-be-fast/4727 "2026-01-20T16:33:04Z")
Hi, Based on documentation, I can see that selectors are slow (Selectors ). I imagine that broker has to scan RAM and potentially disk when consumer is fetching messages. Are all selectors equivalent (user properties … --- ## [SolGateway discarding messages - what size are its buffers and how do we tune and monitor](https://community.solace.com/t/solgateway-discarding-messages-what-size-are-its-buffers-and-how-do-we-tune-and-monitor/4729)
**Author:** [@Olly78134](https://community.solace.com/u/Olly78134)\ **Replies:** 2\ **Last updated:** [January 19, 2026, 2:15am UTC](https://community.solace.com/t/solgateway-discarding-messages-what-size-are-its-buffers-and-how-do-we-tune-and-monitor/4729 "2026-01-19T02:15:07Z")
Our application is being notified of discards from the SolGateway. How large are the SolGateway egress buffers Can we tune these sizes How can our support team monitor when SolGateway is getting close to discarding mes… --- ## [Does the Solace have batch update for consumer or anything like that?](https://community.solace.com/t/does-the-solace-have-batch-update-for-consumer-or-anything-like-that/4658)
**Author:** [@finluu](https://community.solace.com/u/finluu)\ **Replies:** 5\ **Last updated:** [January 19, 2026, 1:40am UTC](https://community.solace.com/t/does-the-solace-have-batch-update-for-consumer-or-anything-like-that/4658 "2026-01-19T01:40:23Z")
I tried to use Solace with my Quarkus application. I would like to consume messages based on batch but I didn’t see any information for Solace in Quarkus, just some info in Spring Cloud. Could you give me the page/sectio… --- ## [Different Authz models across services - Semp and Solace Messaging API](https://community.solace.com/t/different-authz-models-across-services-semp-and-solace-messaging-api/4726)
**Author:** [@radoslaw](https://community.solace.com/u/radoslaw)\ **Replies:** 1\ **Last updated:** [January 15, 2026, 1:23pm UTC](https://community.solace.com/t/different-authz-models-across-services-semp-and-solace-messaging-api/4726 "2026-01-15T13:23:42Z")
hi, Problem statement: SEMP API has wider RBAC then Solace Messaging Api based on Profile ACLs. Are there any plans add same model to SEMP API? Wider problem statement: can’t ACK message using receiver that received me… --- ## [Unable to delete message from broker using semp v2 API call](https://community.solace.com/t/unable-to-delete-message-from-broker-using-semp-v2-api-call/4723)
**Author:** [@radoslaw](https://community.solace.com/u/radoslaw)\ **Replies:** 2\ **Last updated:** [January 14, 2026, 9:26pm UTC](https://community.solace.com/t/unable-to-delete-message-from-broker-using-semp-v2-api-call/4723 "2026-01-14T21:26:02Z")
hi, I’m exploring using API to ack (delete) message from the queue. I’ve found SEMP API Reference which states that there is /SEMP/v2/monitor/msgVpns/%s/queues/%s/msgs/%d/delete handler. When I run solace/solace-pubsub… --- ## [Performance Degradation While Consuming Messages from Solace Queue via AMQP (Qpid JMS)](https://community.solace.com/t/performance-degradation-while-consuming-messages-from-solace-queue-via-amqp-qpid-jms/4653)
**Author:** [@sinchana](https://community.solace.com/u/sinchana)\ **Replies:** 3\ **Last updated:** [November 24, 2025, 1:02pm UTC](https://community.solace.com/t/performance-degradation-while-consuming-messages-from-solace-queue-via-amqp-qpid-jms/4653 "2025-11-24T13:02:32Z")
Hi Team, We are observing a significant performance degradation while consuming messages from Solace queues. Earlier, message consumption was very fast ( 5lakh message of each 10kb consumed in 3-4 minutes), but over the… --- ## [Starting a Solace Broker Container pre-configured](https://community.solace.com/t/starting-a-solace-broker-container-pre-configured/4656)
**Author:** [@Pascal](https://community.solace.com/u/Pascal)\ **Replies:** 2\ **Last updated:** [November 24, 2025, 6:22am UTC](https://community.solace.com/t/starting-a-solace-broker-container-pre-configured/4656 "2025-11-24T06:22:41Z")
Hello everyone, I’m looking to run a Solace Broker container with a modified configuration right from the start. Specifically, I need to ensure that the container is launched with a specific syslog endpoint already con… --- ## [Consume message using AMQP 1.0](https://community.solace.com/t/consume-message-using-amqp-1-0/4639)
**Author:** [@sinchana](https://community.solace.com/u/sinchana)\ **Replies:** 8\ **Last updated:** [November 21, 2025, 9:12am UTC](https://community.solace.com/t/consume-message-using-amqp-1-0/4639 "2025-11-21T09:12:09Z")
Hi, I’m using a Solace broker and consuming messages via AMQP 1.0 using Qpid JMS. I want to connect to a specific Message VPN and consume messages — should the Message VPN name be included in the AMQP URI or provided wit… --- ## [Maximum CPU for direct messaging](https://community.solace.com/t/maximum-cpu-for-direct-messaging/4655)
**Author:** [@RobertHau](https://community.solace.com/u/RobertHau)\ **Replies:** 1\ **Last updated:** [November 20, 2025, 8:18pm UTC](https://community.solace.com/t/maximum-cpu-for-direct-messaging/4655 "2025-11-20T20:18:06Z")
Does anyone have an understanding of the capacity of a pubsub+ software broker. If you use “top -H” on the “dataplane-linux” i see all of these VmrNabCore. Based on what I see in the output its always using 6 of the… --- ## [Configure Authentication Schema (OAuth) With Username/Password & Grant Type?](https://community.solace.com/t/configure-authentication-schema-oauth-with-username-password-grant-type/4648)
**Author:** [@Nagaraju\_Kshathriya](https://community.solace.com/u/Nagaraju_Kshathriya)\ **Replies:** 1\ **Last updated:** [November 16, 2025, 9:13am UTC](https://community.solace.com/t/configure-authentication-schema-oauth-with-username-password-grant-type/4648 "2025-11-16T09:13:41Z")
Hi Solacers, I’m trying to configure an authentication schema in Solace for an OAuth server. Currently, the UI only provides fields for: clientId clientSecret Token Endpoint Scope However, I would like to… --- ## [Service ports are not accessible with IPv6](https://community.solace.com/t/service-ports-are-not-accessible-with-ipv6/4644)
**Author:** [@kgube](https://community.solace.com/u/kgube)\ **Replies:** 1\ **Last updated:** [November 10, 2025, 3:41pm UTC](https://community.solace.com/t/service-ports-are-not-accessible-with-ipv6/4644 "2025-11-10T15:41:01Z")
Hi! I’m trying to run a dev-setup of the event broker in an IPv6-only kubernetes cluster using the helm-chart provided at GitHub - SolaceProducts/pubsubplus-kubernetes-helm-quickstart: Quickstart to launch a Solace PubSu… --- ## [New Beta Solace Cloud Terraform Provider for Managing Event Broker Services](https://community.solace.com/t/new-beta-solace-cloud-terraform-provider-for-managing-event-broker-services/4502)
**Author:** [@mattd](https://community.solace.com/u/mattd)\ **Replies:** 1\ **Last updated:** [November 6, 2025, 7:51pm UTC](https://community.solace.com/t/new-beta-solace-cloud-terraform-provider-for-managing-event-broker-services/4502 "2025-11-06T19:51:38Z")
Solace has introduced a new Terraform provider for PubSub+ Cloud. The new beta Solace Cloud Terraform provider allows you to automate the creation, management, and backup of your event broker services using Terraform scr… --- ## [UNAUTHORIZED Error When Applying Terraform Backup Between PubSub+ Trial Brokers](https://community.solace.com/t/unauthorized-error-when-applying-terraform-backup-between-pubsub-trial-brokers/4632)
**Author:** [@suresh\_nakeertha](https://community.solace.com/u/suresh_nakeertha)\ **Replies:** 5\ **Last updated:** [November 5, 2025, 2:18pm UTC](https://community.solace.com/t/unauthorized-error-when-applying-terraform-backup-between-pubsub-trial-brokers/4632 "2025-11-05T14:18:40Z")
Hi Support Team, I’ve created two PubSub+ Cloud trial accounts for testing Pub/Sub functionality.In the first broker, I configured queues, ACL profiles, and client usernames, and then generated a backup using the Terraf… --- ## [Is anyone worked upon the spark structure streaming with solace using scala , getting below error](https://community.solace.com/t/is-anyone-worked-upon-the-spark-structure-streaming-with-solace-using-scala-getting-below-error/2050)
**Author:** [@ibneyhasan](https://community.solace.com/u/ibneyhasan)\ **Replies:** 3\ **Last updated:** [October 19, 2025, 5:29pm UTC](https://community.solace.com/t/is-anyone-worked-upon-the-spark-structure-streaming-with-solace-using-scala-getting-below-error/2050 "2025-10-19T17:29:59Z")
Is anyone worked upon the spark structure streaming with solace using scala , getting below error \2.12.12\ \3.1.2\ Solace Jar : pubsubplus-connector-s… --- ## [Solace connections (licence) - Which metric represents the connection (licence) usage trends](https://community.solace.com/t/solace-connections-licence-which-metric-represents-the-connection-licence-usage-trends/4600)
**Author:** [@beautwaves\_solace](https://community.solace.com/u/beautwaves_solace)\ **Replies:** 1\ **Last updated:** [October 15, 2025, 7:11pm UTC](https://community.solace.com/t/solace-connections-licence-which-metric-represents-the-connection-licence-usage-trends/4600 "2025-10-15T19:11:46Z")
I can see the connection (licence) usage or entitlement here on Message VPN. Can you please advise which Data Dog metric represents this value so we can see the usage trend over time? --- ## [Solace Oauth token update with JMS](https://community.solace.com/t/solace-oauth-token-update-with-jms/4587)
**Author:** [@user39](https://community.solace.com/u/user39)\ **Replies:** 2\ **Last updated:** [October 7, 2025, 6:38pm UTC](https://community.solace.com/t/solace-oauth-token-update-with-jms/4587 "2025-10-07T18:38:01Z")
Hi, I am trying to use Oauth with JMS. I followed the example solace-samples-jms/src/main/java/com/solace/samples/jms/snippets/HowToCreateAConnectionForOAuth.java at master · SolaceSamples/solace-samples-jms · GitHub A… --- ## [Solace msg not removed from broker even after ack](https://community.solace.com/t/solace-msg-not-removed-from-broker-even-after-ack/4511)
**Author:** [@ajay.solace](https://community.solace.com/u/ajay.solace)\ **Replies:** 9\ **Last updated:** [October 3, 2025, 7:30pm UTC](https://community.solace.com/t/solace-msg-not-removed-from-broker-even-after-ack/4511 "2025-10-03T19:30:25Z")
Hi I have solace dte with 1 topic subscription, I am publishing message on the topic and messages can be duplicate based on some headers and content. For example let’s say I am publishing 50 messages with same productId … --- ## [NodePort deployment - ports and best practice](https://community.solace.com/t/nodeport-deployment-ports-and-best-practice/4554)
**Author:** [@gates](https://community.solace.com/u/gates)\ **Replies:** 0\ **Last updated:** [September 8, 2025, 3:15pm UTC](https://community.solace.com/t/nodeport-deployment-ports-and-best-practice/4554 "2025-09-08T15:15:07Z")
Found this on page: Changing the Port Configuration for Event Broker Services “If you are using NodePort as part of your deployment for Customer-Controlled Regions, creating an event broker service generates the port num… --- ## [Docker - raising system\_scaling\_maxconnectioncount](https://community.solace.com/t/docker-raising-system-scaling-maxconnectioncount/4547)
**Author:** [@user29](https://community.solace.com/u/user29)\ **Replies:** 3\ **Last updated:** [September 4, 2025, 3:41pm UTC](https://community.solace.com/t/docker-raising-system-scaling-maxconnectioncount/4547 "2025-09-04T15:41:53Z")
Hello all, I’ve set up 3 message brokers via docker-compose and am attempting to cluster them. I’ve run into the problem of having to increase the max connection limit from 100 to 1000. The suggestions that are out th… --- ## [NAB Error after appliance move](https://community.solace.com/t/nab-error-after-appliance-move/4533)
**Author:** [@jgandy](https://community.solace.com/u/jgandy)\ **Replies:** 3\ **Last updated:** [September 3, 2025, 1:47pm UTC](https://community.solace.com/t/nab-error-after-appliance-move/4533 "2025-09-03T13:47:21Z")
We have some old 3260 machines that we are hanging on to as we migrate to pubsub+ platform. We moved a pair to a new data center and I’m seeing this on one of the pair. Anyone seen this before? I can’t get to the stat… --- ## [golang solance API for certificate based authentication](https://community.solace.com/t/golang-solance-api-for-certificate-based-authentication/1706)
**Author:** [@ulrich](https://community.solace.com/u/ulrich)\ **Replies:** 5\ **Last updated:** [September 1, 2025, 7:57am UTC](https://community.solace.com/t/golang-solance-api-for-certificate-based-authentication/1706 "2025-09-01T07:57:43Z")
Hi, I followed Configuring an Event Broker Service to use Client Certificate Authentication and set up the solace system to allow and accept certificate based authentication. But so far I wasn’t able to get it runnin… --- ## [Using SDK perf with a user containing the @ character in its name](https://community.solace.com/t/using-sdk-perf-with-a-user-containing-the-character-in-its-name/4526)
**Author:** [@pruffieux](https://community.solace.com/u/pruffieux)\ **Replies:** 2\ **Last updated:** [August 22, 2025, 12:56pm UTC](https://community.solace.com/t/using-sdk-perf-with-a-user-containing-the-character-in-its-name/4526 "2025-08-22T12:56:55Z")
Let say I want to connect to my broker with a specific user: john@system I am wondering how to escape the @ character as the -cu option is taking the first @ as vpn separator. If I launch my command with: ./sdkperf\_j… --- ## [Export acl & no-subscription-match logs](https://community.solace.com/t/export-acl-no-subscription-match-logs/4515)
**Author:** [@jfg1306](https://community.solace.com/u/jfg1306)\ **Replies:** 2\ **Last updated:** [August 21, 2025, 6:34am UTC](https://community.solace.com/t/export-acl-no-subscription-match-logs/4515 "2025-08-21T06:34:19Z")
Hello Solace Community, We are looking for a way to export the entries from the acl-log and no-subscription-match-log from our brokers so they can be centrally collected and analyzed. We are offering “Solace-as-a-Servi… --- ## [Can websocket 8008 support PERSISTENT delivery mode?](https://community.solace.com/t/can-websocket-8008-support-persistent-delivery-mode/4475)
**Author:** [@huzachary](https://community.solace.com/u/huzachary)\ **Replies:** 3\ **Last updated:** [August 1, 2025, 6:51am UTC](https://community.solace.com/t/can-websocket-8008-support-persistent-delivery-mode/4475 "2025-08-01T06:51:20Z")
I am developing a solace producer with the C API. But the project is mainly written by Lua language. We wrap the C API into Lua via FFI. One issue we discover that on platform aarch64, PERSISTENT delivery to a topic sub… --- ## [Error in Topic endpoint and Queue Creation](https://community.solace.com/t/error-in-topic-endpoint-and-queue-creation/4484)
**Author:** [@jayMehta](https://community.solace.com/u/jayMehta)\ **Replies:** 4\ **Last updated:** [July 31, 2025, 1:59pm UTC](https://community.solace.com/t/error-in-topic-endpoint-and-queue-creation/4484 "2025-07-31T13:59:31Z")
@Aaron Hello Solace Support Team, I’m using a self-hosted PubSub+ Standard Event Broker for my application. In this application, I’m utilizing both topic and queue mechanisms. Currently, I have 76 topics and 17 queues… --- ## [Assistance Required: Inconsistent Message Delivery with MQTT QoS 1/2 Subscriptions](https://community.solace.com/t/assistance-required-inconsistent-message-delivery-with-mqtt-qos-1-2-subscriptions/4470)
**Author:** [@Srikanth\_bethi](https://community.solace.com/u/Srikanth_bethi)\ **Replies:** 2\ **Last updated:** [July 25, 2025, 6:14am UTC](https://community.solace.com/t/assistance-required-inconsistent-message-delivery-with-mqtt-qos-1-2-subscriptions/4470 "2025-07-25T06:14:42Z")
Dear Solace Support Team, I have configured a queue named solaceQueue and associated a topic SolaceTopic with it in the Solace AEM dashboard. Using the MQTT framework, I am publishing messages to SolaceTopic with QoS le… --- ## [Many apps authenticating via OAuth](https://community.solace.com/t/many-apps-authenticating-via-oauth/1739)
**Author:** [@zgl](https://community.solace.com/u/zgl)\ **Replies:** 3\ **Last updated:** [July 22, 2025, 9:47am UTC](https://community.solace.com/t/many-apps-authenticating-via-oauth/1739 "2025-07-22T09:47:31Z")
Hi! I have a scenario where many applications will authenticate to the broker using OAuth, consumers and producers. I managed to authenticate one app but I’m not able to authenticate the others. I don’t want them shari… --- ## [Asynchronously Sending and Receive Messages using the Solace JMS API](https://community.solace.com/t/asynchronously-sending-and-receive-messages-using-the-solace-jms-api/196)
**Author:** [@JonathanEid](https://community.solace.com/u/JonathanEid)\ **Replies:** 4\ **Last updated:** [July 14, 2025, 10:06am UTC](https://community.solace.com/t/asynchronously-sending-and-receive-messages-using-the-solace-jms-api/196 "2025-07-14T10:06:16Z")
The Solace JCSMP library provides a lot of power and configuration to produce and consume messages in many fashions. However, for my testing purposes, I must use the Solace JMS API library and it does not provide the as… --- ## [Solace docker image CVE/Vulnerabilities fixes](https://community.solace.com/t/solace-docker-image-cve-vulnerabilities-fixes/4450)
**Author:** [@pachev](https://community.solace.com/u/pachev)\ **Replies:** 5\ **Last updated:** [July 10, 2025, 3:47pm UTC](https://community.solace.com/t/solace-docker-image-cve-vulnerabilities-fixes/4450 "2025-07-10T15:47:36Z")
Hello, My Aqua Scans show high vulnerabilities for lts, edge, and latest . Scans on both lts and edge tags show 2 high vulnerabilities, and 147 medium vulnerabilities. What is the typical plan or timeline to remediate t… --- ## [\`solclientjs\` v10.18.1 doesn't work with \`sslPrivateKey\` / \`sslCertificate\`](https://community.solace.com/t/solclientjs-v10-18-1-doesnt-work-with-sslprivatekey-sslcertificate/4390)
**Author:** [@ph1234](https://community.solace.com/u/ph1234)\ **Replies:** 2\ **Last updated:** [June 24, 2025, 6:54am UTC](https://community.solace.com/t/solclientjs-v10-18-1-doesnt-work-with-sslprivatekey-sslcertificate/4390 "2025-06-24T06:54:01Z")
// see https://docs.solace.com/API-Developer-Online-Ref-Documentation/nodejs/solace.SessionProperties.html this.#session = s.SolclientFactory.createSession({ url: this.#url, vpnName: this.#vpn, authenticationScheme… [Previous page](https://community.solace.com/c/event-broker/6.md) [Next page](https://community.solace.com/c/event-broker/6.md?page=2)