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Q1.

An Adobe Commerce Architect is setting up a Development environment for an on-premises project that will be used for developers to specifically test functionality, not performance, before being passed to the Testing team.

The Magento application must run with the following requirements:

1. Errors should be logged and hidden from the user

2. Cache mode can only be changed from Command Line

3. Static files should be created dynamically and then cached

Which Application Mode is required to achieve this?

Answer: C

See the explanation below.

Developer mode is the best option for setting up a development environment for testing functionality, not performance, before being passed to the testing team. In developer mode:

Errors are logged and hidden from the user. This ensures that the user does not see any uncaught exceptions or debugging information, but the developers can still access them from the log files.

Cache mode can only be changed from command line. This prevents any accidental or unauthorized changes to the cache settings from the admin panel or other sources.

Static files are created dynamically and then cached. This allows the developers to see the latest changes to the static files without having to run the static content deployment command every time. The static files are also cached for faster loading.


Q2.

An Adobe Commerce Architect is asked by a merchant using B2B features to help with a configuration issue.

The Architect creates a test Company Account and wants to create Approval Rules for orders. The Approval Rules tab does not appear in the Company section in the Customer Account Menu when the Architect logs in using the Company Administrator account.

Which two steps must be taken to fix this issue? (Choose two.)

Answer: C, E

See the explanation below.

The issue here is that the Approval Rules tab does not appear in the Company section in the Customer Account Menu when the Architect logs in using the Company Administrator account. This is because the Approval Rules feature requires two settings to be enabled: the Purchase Orders feature and the Purchase Order payment method. The solution is to set 'Enable Purchase Orders' in the B2B Admin to TRUE and make sure that the 'Purchase Order' payment method is active. This will allow the Architect to create and manage Approval Rules for orders.


Q3.

An Adobe Commerce Architect notices that queue consumers close TCP connections too often on Adobe Commerce Cloud server leading to delays in processing messages.

The Architect needs to make sure that consumers do not terminate after processing available messages in the queue when CRON job is running these consumers.

How should the Architect meet this requirement?

Answer: A

See the explanation below.

Option A is correct because setting the consumers_wait_for_max_messages variable true in the deployment stage is the best way to meet the requirement. This variable controls whether the queue consumers should wait for a maximum number of messages to process before terminating. If this variable is set to true, the consumers will not terminate after processing the available messages in the queue, but will wait until they reach the max_messages limit or the cron job timeout.This way, the consumers can keep the TCP connections open and avoid delays in processing messages1.

Option B is incorrect because increasing the multiple_process limit to spawn more processes for each consumer will not solve the issue of queue consumers closing TCP connections too often. The multiple_process limit determines how many parallel processes can be run for each consumer. Increasing this limit may improve the throughput of message processing, but it will also consume more server resources and may cause conflicts or errors.Moreover, it will not prevent the consumers from terminating after processing the available messages in the queue2.

Option C is incorrect because changing the max_messages from 10,000 to 1,000 for CRON_CONSUMERS_RUNNER variable will worsen the issue of queue consumers closing TCP connections too often. The max_messages variable defines how many messages each consumer should process before terminating. Decreasing this variable will make the consumers terminate more frequently, which will result in more TCP connections being closed and reopened.This will increase the delays in processing messages3.


1: Configure message queues | Adobe Commerce Developer Guide

2: Configure message queues | Adobe Commerce Developer Guide

3: Configure message queues | Adobe Commerce Developer Guide

Q4.

An Architect is investigating a merchant's Adobe Commerce production environment where all customer session data is randomly being lost. Customer session data has been configured to be persisted using Redis, as are all caches (except full page cache, which is handled via Varnish).

After an initial review, the Architect is able to replicate the loss of customer session data by flushing the Magento cache storage, either via the Adobe Commerce Admin Panel or running bin/magento cache: flush on the command line. Refreshing all the caches in the Adobe Commerce Admin Panel or running bin/magento cache: clean on the command line does not cause session data to be lost.

What should be the next step?

Q5.

An Architect is configuring the preload.keys for Redis on an Adobe Commerce on-premise instance.

The Architect discovers that the following cache keys are loaded on each frontend request: EAV_ENTITY_TYPES, GLOBAL_PLUGIN_LIST, DB_IS_UP_TO_DATE, SYSTEM_DEFAULT.

* The id_prefix of the frontend => page_cache is set to 063_.

* The id_pref ix of frontend => default is set to 762_.

* The Architect has enabled and configured Redis L2 caching.

How should the preload.keys be configured?

A)

q5_AD0-E722

B)

q5_AD0-E722

C)

q5_AD0-E722

D)

q5_AD0-E722

Answer: C

See the explanation below.

Option C is correct because it configures the preload.keys correctly for Redis L2 caching on an Adobe Commerce on-premise instance. Redis L2 caching is a feature that allows storing the cache data in both Redis and the local file system. This way, the cache data can be loaded faster from the local storage, while Redis acts as a cache invalidation service.To use Redis L2 caching, the backend option for both frontend => page_cache and frontend => default must be set to Magento\Framework\Cache\Backend\RemoteSynchronizedCache1. To enable the preload feature, which reduces the number of requests to Redis, the preload.keys option must be specified with the cache keys that are loaded on each frontend request.However, unlike Redis L1 caching, the preload.keys must include the suffix :hash to indicate that only the hash values of the cache data are stored in Redis2. Therefore, the correct configuration for preload.keys is:

[ '762_EAV_ENTITY_TYPES:hash', '762_GLOBAL_PLUGIN_LIST:hash', '762_DB_IS_UP_TO_DATE:hash', '762_SYSTEM_DEFAULT:hash', ],

Option A is incorrect because it configures the preload.keys incorrectly for Redis L2 caching. It uses the id_prefix of frontend => page_cache (063_) instead of frontend => default (762_) for the cache keys. This will cause a mismatch between the cache keys and the cache data, and result in incorrect or missing cache data.Moreover, it does not include the suffix :hash for the preload.keys, which is required for Redis L2 caching2.

Option B is incorrect because it configures the preload.keys incorrectly for Redis L2 caching.It does not include the suffix :hash for the preload.keys, which is required for Redis L2 caching2. It also uses a wrong cache key (GLOBAL_PLUGIN_LIST) instead of GLOBAL_PLUGIN_LIST.

Option D is incorrect because it configures the preload.keys incorrectly for Redis L2 caching. It uses a wrong id_prefix (162_) instead of frontend => default (762_) for the cache keys. This will cause a mismatch between the cache keys and the cache data, and result in incorrect or missing cache data. It also uses a wrong cache key (EAV_ENTITY_TYPES) instead of EAV_ENTITY_TYPES.


1:Two-level caching | Adobe Commerce Developer Guide

2:Use Redis for default cache | Adobe Commerce Developer Guide

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