Spring Boot Kotlin Coroutine Caching of Http Calls

0

i am trying to use the spring-boot caching mechanism to cache a http response which i get. Currently i have an http client which makes an
rest call for me. I want the result to be cached.

So i created a service which adds a cachable layer:

@Cacheable("logicalTime", sync = true)

open fun getLogicalTimeById(dsId: String, idLogicalTimes: String): LogicalTime {

    return logicalTimeResource.getById(dsId, idLogicalTimes)

}

logicalTimeResource is a proxy to the rest api.

The application framework looks like this:

• a sheduler which is called every second


• iterates through a List with entries


• 
  

  Calls getLogicalTimeById for each entry in a Coroutine:

  
  
  

  GlobalScope.launch {
getLogicalTime(element.dsId, element.idLogicalTime
}

  
  

i'd expect that the cache is looked up for the dsId and idLogicalTimes, and when there is an entry for this pair of values, it is returned from the cache. Otherwise logicalTimeResource.getById(dsId, idLogicalTimes)

Now the problem is that logicalTimeResource.getById(dsId, idLogicalTimes) is called for every element in the List.
Yes i have @EnableCaching at my Applicaiton.kt

Edit:

I created a small gist which shows that the cache is not working:
https://gist.github.com/H3npi/799df85d4570e3cbe8b02ede24bea5a8

The main Application looks like this:

package com.example.cachetest



import org.springframework.boot.autoconfigure.SpringBootApplication

import org.springframework.boot.runApplication

import org.springframework.cache.annotation.EnableCaching



@SpringBootApplication

@EnableCaching

class CachetestApplication



fun main(args: Array<String>) {

    runApplication<CachetestApplication>(*args)

}

I see both requests hitting my api service on localhost.

Edit v2:

Thanks to Stephane Nicoll pointing out that caching in the same class doesn't work, i updated the gist and moved all calls to a repo class. This looks like this: https://gist.github.com/H3npi/af37ea97ea3450deeca2ab8933072c94

spring-boot kotlin spring-cache kotlin-coroutines

share|improve this question

edited Nov 21 '18 at 14:26

H3npi

asked Nov 20 '18 at 12:34

H3npiH3npi

308

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I'd remove sync, you don't want to pay the cost of the synchronization just to avoid two concurrent HTTP calls on the same tuple. It's impossible to say what is going on with the details you've given. What is the cache library? Have you looked at the auto-configuration report that caching is active?
  
  – Stephane Nicoll
  Nov 20 '18 at 13:31
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  thanks for the sync note! Currently i am using the default cache library, no additional configuration done. The cache should be working, because i see a ] o.s.c.a.AnnotationCacheOperationSource : Adding cacheable method 'getLogicalTimeById' with attribute: in my log
  
  – H3npi
  Nov 20 '18 at 13:56
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Sorry I can't help you with the details you've shared. Perhaps you can share a small sample on github that reproduces the problem. If the cache isn't working, it should be quite easy to replicate.
  
  – Stephane Nicoll
  Nov 21 '18 at 7:43
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  i'll set up a sample project and send you the link!
  
  – H3npi
  Nov 21 '18 at 8:29
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I just added a small example to the main post
  
  – H3npi
  Nov 21 '18 at 9:09
  

  
  
  
  

 | 
show 2 more comments

0

i am trying to use the spring-boot caching mechanism to cache a http response which i get. Currently i have an http client which makes an
rest call for me. I want the result to be cached.

So i created a service which adds a cachable layer:

@Cacheable("logicalTime", sync = true)

open fun getLogicalTimeById(dsId: String, idLogicalTimes: String): LogicalTime {

    return logicalTimeResource.getById(dsId, idLogicalTimes)

}

logicalTimeResource is a proxy to the rest api.

The application framework looks like this:

• a sheduler which is called every second


• iterates through a List with entries


• 
  

  Calls getLogicalTimeById for each entry in a Coroutine:

  
  
  

  GlobalScope.launch {
getLogicalTime(element.dsId, element.idLogicalTime
}

  
  

i'd expect that the cache is looked up for the dsId and idLogicalTimes, and when there is an entry for this pair of values, it is returned from the cache. Otherwise logicalTimeResource.getById(dsId, idLogicalTimes)

Now the problem is that logicalTimeResource.getById(dsId, idLogicalTimes) is called for every element in the List.
Yes i have @EnableCaching at my Applicaiton.kt

Edit:

I created a small gist which shows that the cache is not working:
https://gist.github.com/H3npi/799df85d4570e3cbe8b02ede24bea5a8

The main Application looks like this:

package com.example.cachetest



import org.springframework.boot.autoconfigure.SpringBootApplication

import org.springframework.boot.runApplication

import org.springframework.cache.annotation.EnableCaching



@SpringBootApplication

@EnableCaching

class CachetestApplication



fun main(args: Array<String>) {

    runApplication<CachetestApplication>(*args)

}

I see both requests hitting my api service on localhost.

Edit v2:

Thanks to Stephane Nicoll pointing out that caching in the same class doesn't work, i updated the gist and moved all calls to a repo class. This looks like this: https://gist.github.com/H3npi/af37ea97ea3450deeca2ab8933072c94

spring-boot kotlin spring-cache kotlin-coroutines

share|improve this question

edited Nov 21 '18 at 14:26

H3npi

asked Nov 20 '18 at 12:34

H3npiH3npi

308

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I'd remove sync, you don't want to pay the cost of the synchronization just to avoid two concurrent HTTP calls on the same tuple. It's impossible to say what is going on with the details you've given. What is the cache library? Have you looked at the auto-configuration report that caching is active?
  
  – Stephane Nicoll
  Nov 20 '18 at 13:31
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  thanks for the sync note! Currently i am using the default cache library, no additional configuration done. The cache should be working, because i see a ] o.s.c.a.AnnotationCacheOperationSource : Adding cacheable method 'getLogicalTimeById' with attribute: in my log
  
  – H3npi
  Nov 20 '18 at 13:56
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Sorry I can't help you with the details you've shared. Perhaps you can share a small sample on github that reproduces the problem. If the cache isn't working, it should be quite easy to replicate.
  
  – Stephane Nicoll
  Nov 21 '18 at 7:43
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  i'll set up a sample project and send you the link!
  
  – H3npi
  Nov 21 '18 at 8:29
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I just added a small example to the main post
  
  – H3npi
  Nov 21 '18 at 9:09
  

  
  
  
  

 | 
show 2 more comments

0

0

0

i am trying to use the spring-boot caching mechanism to cache a http response which i get. Currently i have an http client which makes an
rest call for me. I want the result to be cached.

So i created a service which adds a cachable layer:

@Cacheable("logicalTime", sync = true)

open fun getLogicalTimeById(dsId: String, idLogicalTimes: String): LogicalTime {

    return logicalTimeResource.getById(dsId, idLogicalTimes)

}

logicalTimeResource is a proxy to the rest api.

The application framework looks like this:

• a sheduler which is called every second


• iterates through a List with entries


• 
  

  Calls getLogicalTimeById for each entry in a Coroutine:

  
  
  

  GlobalScope.launch {
getLogicalTime(element.dsId, element.idLogicalTime
}

  
  

i'd expect that the cache is looked up for the dsId and idLogicalTimes, and when there is an entry for this pair of values, it is returned from the cache. Otherwise logicalTimeResource.getById(dsId, idLogicalTimes)

Now the problem is that logicalTimeResource.getById(dsId, idLogicalTimes) is called for every element in the List.
Yes i have @EnableCaching at my Applicaiton.kt

Edit:

I created a small gist which shows that the cache is not working:
https://gist.github.com/H3npi/799df85d4570e3cbe8b02ede24bea5a8

The main Application looks like this:

package com.example.cachetest



import org.springframework.boot.autoconfigure.SpringBootApplication

import org.springframework.boot.runApplication

import org.springframework.cache.annotation.EnableCaching



@SpringBootApplication

@EnableCaching

class CachetestApplication



fun main(args: Array<String>) {

    runApplication<CachetestApplication>(*args)

}

I see both requests hitting my api service on localhost.

Edit v2:

Thanks to Stephane Nicoll pointing out that caching in the same class doesn't work, i updated the gist and moved all calls to a repo class. This looks like this: https://gist.github.com/H3npi/af37ea97ea3450deeca2ab8933072c94

spring-boot kotlin spring-cache kotlin-coroutines

share|improve this question

edited Nov 21 '18 at 14:26

H3npi

asked Nov 20 '18 at 12:34

H3npiH3npi

308

i am trying to use the spring-boot caching mechanism to cache a http response which i get. Currently i have an http client which makes an
rest call for me. I want the result to be cached.

So i created a service which adds a cachable layer:

@Cacheable("logicalTime", sync = true)

open fun getLogicalTimeById(dsId: String, idLogicalTimes: String): LogicalTime {

    return logicalTimeResource.getById(dsId, idLogicalTimes)

}

logicalTimeResource is a proxy to the rest api.

The application framework looks like this:

• a sheduler which is called every second


• iterates through a List with entries


• 
  

  Calls getLogicalTimeById for each entry in a Coroutine:

  
  
  

  GlobalScope.launch {
getLogicalTime(element.dsId, element.idLogicalTime
}

  
  

i'd expect that the cache is looked up for the dsId and idLogicalTimes, and when there is an entry for this pair of values, it is returned from the cache. Otherwise logicalTimeResource.getById(dsId, idLogicalTimes)

Now the problem is that logicalTimeResource.getById(dsId, idLogicalTimes) is called for every element in the List.
Yes i have @EnableCaching at my Applicaiton.kt

Edit:

I created a small gist which shows that the cache is not working:
https://gist.github.com/H3npi/799df85d4570e3cbe8b02ede24bea5a8

The main Application looks like this:

package com.example.cachetest



import org.springframework.boot.autoconfigure.SpringBootApplication

import org.springframework.boot.runApplication

import org.springframework.cache.annotation.EnableCaching



@SpringBootApplication

@EnableCaching

class CachetestApplication



fun main(args: Array<String>) {

    runApplication<CachetestApplication>(*args)

}

I see both requests hitting my api service on localhost.

Edit v2:

Thanks to Stephane Nicoll pointing out that caching in the same class doesn't work, i updated the gist and moved all calls to a repo class. This looks like this: https://gist.github.com/H3npi/af37ea97ea3450deeca2ab8933072c94

spring-boot kotlin spring-cache kotlin-coroutines

spring-boot kotlin spring-cache kotlin-coroutines

share|improve this question

edited Nov 21 '18 at 14:26

H3npi

asked Nov 20 '18 at 12:34

H3npiH3npi

308

share|improve this question

edited Nov 21 '18 at 14:26

H3npi

asked Nov 20 '18 at 12:34

H3npiH3npi

308

share|improve this question

share|improve this question

edited Nov 21 '18 at 14:26

H3npi

edited Nov 21 '18 at 14:26

H3npi

edited Nov 21 '18 at 14:26

H3npi

asked Nov 20 '18 at 12:34

H3npiH3npi

308

asked Nov 20 '18 at 12:34

H3npiH3npi

308

asked Nov 20 '18 at 12:34

H3npiH3npi

308

308

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I'd remove sync, you don't want to pay the cost of the synchronization just to avoid two concurrent HTTP calls on the same tuple. It's impossible to say what is going on with the details you've given. What is the cache library? Have you looked at the auto-configuration report that caching is active?
  
  – Stephane Nicoll
  Nov 20 '18 at 13:31
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  thanks for the sync note! Currently i am using the default cache library, no additional configuration done. The cache should be working, because i see a ] o.s.c.a.AnnotationCacheOperationSource : Adding cacheable method 'getLogicalTimeById' with attribute: in my log
  
  – H3npi
  Nov 20 '18 at 13:56
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Sorry I can't help you with the details you've shared. Perhaps you can share a small sample on github that reproduces the problem. If the cache isn't working, it should be quite easy to replicate.
  
  – Stephane Nicoll
  Nov 21 '18 at 7:43
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  i'll set up a sample project and send you the link!
  
  – H3npi
  Nov 21 '18 at 8:29
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I just added a small example to the main post
  
  – H3npi
  Nov 21 '18 at 9:09
  

  
  
  
  

 | 
show 2 more comments

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I'd remove sync, you don't want to pay the cost of the synchronization just to avoid two concurrent HTTP calls on the same tuple. It's impossible to say what is going on with the details you've given. What is the cache library? Have you looked at the auto-configuration report that caching is active?
  
  – Stephane Nicoll
  Nov 20 '18 at 13:31
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  thanks for the sync note! Currently i am using the default cache library, no additional configuration done. The cache should be working, because i see a ] o.s.c.a.AnnotationCacheOperationSource : Adding cacheable method 'getLogicalTimeById' with attribute: in my log
  
  – H3npi
  Nov 20 '18 at 13:56
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Sorry I can't help you with the details you've shared. Perhaps you can share a small sample on github that reproduces the problem. If the cache isn't working, it should be quite easy to replicate.
  
  – Stephane Nicoll
  Nov 21 '18 at 7:43
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  i'll set up a sample project and send you the link!
  
  – H3npi
  Nov 21 '18 at 8:29
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I just added a small example to the main post
  
  – H3npi
  Nov 21 '18 at 9:09
  

  
  
  
  

I'd remove sync, you don't want to pay the cost of the synchronization just to avoid two concurrent HTTP calls on the same tuple. It's impossible to say what is going on with the details you've given. What is the cache library? Have you looked at the auto-configuration report that caching is active?

– Stephane Nicoll
Nov 20 '18 at 13:31

I'd remove sync, you don't want to pay the cost of the synchronization just to avoid two concurrent HTTP calls on the same tuple. It's impossible to say what is going on with the details you've given. What is the cache library? Have you looked at the auto-configuration report that caching is active?

– Stephane Nicoll
Nov 20 '18 at 13:31

thanks for the sync note! Currently i am using the default cache library, no additional configuration done. The cache should be working, because i see a ] o.s.c.a.AnnotationCacheOperationSource : Adding cacheable method 'getLogicalTimeById' with attribute: in my log

– H3npi
Nov 20 '18 at 13:56

thanks for the sync note! Currently i am using the default cache library, no additional configuration done. The cache should be working, because i see a ] o.s.c.a.AnnotationCacheOperationSource : Adding cacheable method 'getLogicalTimeById' with attribute: in my log

– H3npi
Nov 20 '18 at 13:56

Sorry I can't help you with the details you've shared. Perhaps you can share a small sample on github that reproduces the problem. If the cache isn't working, it should be quite easy to replicate.

– Stephane Nicoll
Nov 21 '18 at 7:43

Sorry I can't help you with the details you've shared. Perhaps you can share a small sample on github that reproduces the problem. If the cache isn't working, it should be quite easy to replicate.

– Stephane Nicoll
Nov 21 '18 at 7:43

i'll set up a sample project and send you the link!

– H3npi
Nov 21 '18 at 8:29

i'll set up a sample project and send you the link!

– H3npi
Nov 21 '18 at 8:29

I just added a small example to the main post

– H3npi
Nov 21 '18 at 9:09

I just added a small example to the main post

– H3npi
Nov 21 '18 at 9:09

 | 
show 2 more comments

1 Answer
1

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oldest

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0

The problem was: My Component was not autowired. Autowiring fixed the issue.

share|improve this answer

answered Nov 22 '18 at 13:36

H3npiH3npi

308

add a comment | 

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1 Answer
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1 Answer
1

active

oldest

votes

active

oldest

votes

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oldest

votes

0

The problem was: My Component was not autowired. Autowiring fixed the issue.

share|improve this answer

answered Nov 22 '18 at 13:36

H3npiH3npi

308

add a comment | 

0

The problem was: My Component was not autowired. Autowiring fixed the issue.

share|improve this answer

answered Nov 22 '18 at 13:36

H3npiH3npi

308

add a comment | 

0

0

0

The problem was: My Component was not autowired. Autowiring fixed the issue.

share|improve this answer

answered Nov 22 '18 at 13:36

H3npiH3npi

308

The problem was: My Component was not autowired. Autowiring fixed the issue.

share|improve this answer

answered Nov 22 '18 at 13:36

H3npiH3npi

308

share|improve this answer

share|improve this answer

answered Nov 22 '18 at 13:36

H3npiH3npi

308

answered Nov 22 '18 at 13:36

H3npiH3npi

308

answered Nov 22 '18 at 13:36

H3npiH3npi

308

308

add a comment | 

add a comment | 

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