lars Posts - Answer Overflow

lars

•Created by lars on 3/29/2025 in #java-help

Starting with profiling. any good suggestions for books

I am trying to understand software profiling from a theoretical perspective. Any suggestions for books/articles/video lectures are appreciated.

34 replies

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•Created by lars on 3/28/2025 in #java-help

Resources for java profiling

I am trying to understand software profiling out of interest. Wanted to read about it some more but the resources I found only focus on the tools used for it. I wanted to understand it through a book/video[not focusing the tool itself but the concept of software profiling]. I will really appreciate any suggestions regarding this.

5 replies

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•Created by lars on 11/27/2024 in #java-help

Using singleton pattern at a request level basis

I am fetching a response twice in an api flow. So how can I use singleton pattern here to return the same response again without making the second call.

34 replies

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•Created by lars on 9/17/2024 in #java-help

Handling Race condition

My db is getting from two flows - updateByWebhook - can make the status to success and try another registation - can make status to created, now I have to handle the case where the registration flow begins and then the webhook updates the record to success and after this in the registration flow we try to save the record again. condition is record should not update if it is already in success state.

4 replies

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•Created by lars on 6/1/2023 in #java-help

Getting Slf4J error in SpringBoot

Error is

Exception in thread "main" java.lang.AbstractMethodError: Receiver class org.springframework.boot.logging.logback.RootLogLevelConfigurator does not define or inherit an implementation of the resolved method 'abstract void configure(ch.qos.logback.classic.LoggerContext)' of interface ch.qos.logback.classic.spi.Configurator.
    at ch.qos.logback.classic.util.ContextInitializer.autoConfig(ContextInitializer.java:156)
    at org.slf4j.impl.StaticLoggerBinder.init(StaticLoggerBinder.java:84)
    at org.slf4j.impl.StaticLoggerBinder.<clinit>(StaticLoggerBinder.java:55)
    at org.slf4j.LoggerFactory.bind(LoggerFactory.java:150)
    at org.slf4j.LoggerFactory.performInitialization(LoggerFactory.java:124)
    at org.slf4j.LoggerFactory.getILoggerFactory(LoggerFactory.java:417)
    at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:362)
    at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:388)
    at com.pchf.avkashservice.AvkashServiceApplication.<clinit>(AvkashServiceApplication.java:17)

Process finished with exit code 1

Exception in thread "main" java.lang.AbstractMethodError: Receiver class org.springframework.boot.logging.logback.RootLogLevelConfigurator does not define or inherit an implementation of the resolved method 'abstract void configure(ch.qos.logback.classic.LoggerContext)' of interface ch.qos.logback.classic.spi.Configurator.
    at ch.qos.logback.classic.util.ContextInitializer.autoConfig(ContextInitializer.java:156)
    at org.slf4j.impl.StaticLoggerBinder.init(StaticLoggerBinder.java:84)
    at org.slf4j.impl.StaticLoggerBinder.<clinit>(StaticLoggerBinder.java:55)
    at org.slf4j.LoggerFactory.bind(LoggerFactory.java:150)
    at org.slf4j.LoggerFactory.performInitialization(LoggerFactory.java:124)
    at org.slf4j.LoggerFactory.getILoggerFactory(LoggerFactory.java:417)
    at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:362)
    at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:388)
    at com.pchf.avkashservice.AvkashServiceApplication.<clinit>(AvkashServiceApplication.java:17)

Process finished with exit code 1

attached my pom.xml

25 replies

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