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Cache Configuration#

The Janssen Server provides multiple configuration tools to perform these tasks.

Use the command line to perform actions from the terminal. Learn how to use Jans CLI here or jump straight to the Using Command Line

Cache configuration is not possible in Text-based UI.

Use REST API for programmatic access or invoke via tools like CURL or Postman. Learn how to use Janssen Server Config API here or Jump straight to the Using Configuration REST API

Using Command Line#

To get the details of Janssen command line operations relevant to the cache configuration, you can check the operations under CacheConfiguration using the command below:

Command
jans cli --info CacheConfiguration

It prints below two operations:

Output
Operation ID: get-config-cache
  Description: Returns cache configuration.
Operation ID: patch-config-cache
  Description: Patch cache configuration
  Schema: Array of JsonPatch

To get sample schema type jans cli --schema <schema>, for example jans cli --schema JsonPatch

Get Cache Configuration#

You can get the current Cache Configuration of your Janssen Server by performing this operation.

Command
jans cli --operation-id get-config-cache

It will show the Cache configuration details.

Sample Output
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{
  "cacheProviderType": "NATIVE_PERSISTENCE",
  "memcachedConfiguration": {
    "servers": "localhost:11211",
    "maxOperationQueueLength": 100000,
    "bufferSize": 32768,
    "defaultPutExpiration": 60,
    "connectionFactoryType": "DEFAULT"
  },
  "inMemoryConfiguration": {
    "defaultPutExpiration": 60
  },
  "redisConfiguration": {
    "redisProviderType": "STANDALONE",
    "servers": "localhost:6379",
    "defaultPutExpiration": 60,
    "useSSL": false,
    "maxIdleConnections": 10,
    "maxTotalConnections": 500,
    "connectionTimeout": 3000,
    "soTimeout": 3000,
    "maxRetryAttempts": 5
  },
  "nativePersistenceConfiguration": {
    "defaultPutExpiration": 60,
    "defaultCleanupBatchSize": 10000,
    "deleteExpiredOnGetRequest": false,
    "disableAttemptUpdateBeforeInsert": false
  }
}

Patch Cache Configuration#

You may need to update Cache configuration, In that case patch-config-cache can be used to modify the cache configuration.

Operation ID: patch-config-cache
  Description: Patch cache configuration
  Schema: Array of JsonPatch

To get sample schema type jans cli --schema <schema>, for example jans cli --schema JsonPatch

The patch-config-cache operation uses the JSON Patch schema to describe the configuration change. Refer here to know more about schema.

For instance, to perform a replace operation at memcachedConfiguration/bufferSize and change it from 32768 to 32788, the JSON Patch data would look like below:

Input
[
  {
  "op": "replace",
  "path": "memcachedConfiguration/bufferSize",
  "value": "32788"
  }
]

Store the above JSON Patch data in a file, for instance, /tmp/patch-cache.json

Using the above file, perform the operation as below:

Sample Command
jans cli --operation-id patch-config-cache --data /tmp/patch-cache.json
Sample Output
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{
  "cacheProviderType": "NATIVE_PERSISTENCE",
  "memcachedConfiguration": {
    "servers": "localhost:11211",
    "maxOperationQueueLength": 100000,
    "bufferSize": 32788,
    "defaultPutExpiration": 60,
    "connectionFactoryType": "DEFAULT"
  },
  "inMemoryConfiguration": {
    "defaultPutExpiration": 60
  },
  "redisConfiguration": {
    "redisProviderType": "STANDALONE",
    "servers": "localhost:6379",
    "defaultPutExpiration": 60,
    "useSSL": false,
    "maxIdleConnections": 10,
    "maxTotalConnections": 500,
    "connectionTimeout": 3000,
    "soTimeout": 3000,
    "maxRetryAttempts": 5
  },
  "nativePersistenceConfiguration": {
    "defaultPutExpiration": 60,
    "defaultCleanupBatchSize": 10000,
    "deleteExpiredOnGetRequest": false,
    "disableAttemptUpdateBeforeInsert": false
  }
}

Quick Patch Operation#

In case you need to do a quick patch operation, you can do that also. For example, let's say we would like to replace defaultPutExpiration value from nativePersistenceConfiguration. We can do that simply by the following command line:

Command
jans cli --operation-id patch-config-cache \
--patch-replace nativePersistenceConfiguration/defaultPutExpiration:90

It will change the value with the given one. There are few options to do such quick patch operations. Please check them out from here.

Using Configuration REST API#

Janssen Server Configuration REST API exposes relevant endpoints for managing and configuring Cache. Endpoint details are published in the Swagger document.

Last update: 2024-10-29
Created: 2021-04-22