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MXS-1474 Document and act in the same way

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From the documentation:

   * `never`: When there is an active transaction, no data will be returned
     from the cache, but all requests will always be sent to the backend.
     The cache will be populated inside _explicitly_ read-only transactions.
     Inside transactions that are not explicitly read-only, the cache will
     be populated _until_ the first non-SELECT statement.
   * `read_only_transactions`: The cache will be used and populated inside
     _explicitly_ read-only transactions. Inside transactions that are not
     explicitly read-only, the cache will be populated, but not used
     _until_ the first non-SELECT statement.
   * `all_transactions`: The cache will be used and populated inside
     _explicitly_ read-only transactions. Inside transactions that are not
     explicitly read-only, the cache will be used and populated _until_ the
     first non-SELECT statement.
This commit is contained in:
Johan Wikman
2017-10-25 16:01:13 +03:00
parent e45ee22ec3
commit f52a0acbbe
3 changed files with 67 additions and 36 deletions
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9
Documentation/Filters/Cache.md
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@ -265,10 +265,13 @@ are active transactions:
* `never`: When there is an active transaction, no data will be returned
from the cache, but all requests will always be sent to the backend.
The cache will be populated if the transaction is explicitly read only
or if no non-SELECT statement has been encounted.
The cache will be populated inside _explicitly_ read-only transactions.
Inside transactions that are not explicitly read-only, the cache will
be populated _until_ the first non-SELECT statement.
* `read_only_transactions`: The cache will be used and populated inside
_explicitly_ read-only transactions.
_explicitly_ read-only transactions. Inside transactions that are not
explicitly read-only, the cache will be populated, but not used
_until_ the first non-SELECT statement.
* `all_transactions`: The cache will be used and populated inside
_explicitly_ read-only transactions. Inside transactions that are not
explicitly read-only, the cache will be used and populated _until_ the