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Add alternator_describe_table_info_cache_validity_in_seconds config option

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Add a `alternator_describe_table_info_cache_validity_in_seconds`
configuration option with default value of 6 hours.
This commit is contained in:
Radosław Cybulski
2025-12-29 08:33:05 +01:00
parent e246abec4d
commit a532fc73bc
2 changed files with 3 additions and 0 deletions
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2
db/config.cc
View File

@@ -1478,6 +1478,8 @@ db::config::config(std::shared_ptr<db::extensions> exts)
, alternator_max_expression_cache_entries_per_shard(this, "alternator_max_expression_cache_entries_per_shard", liveness::LiveUpdate, value_status::Used, 2000, "Maximum number of cached parsed request expressions, per shard.")
, alternator_max_users_query_size_in_trace_output(this, "alternator_max_users_query_size_in_trace_output", liveness::LiveUpdate, value_status::Used, uint64_t(4096),
"Maximum size of user's command in trace output (`alternator_op` entry). Larger traces will be truncated and have `<truncated>` message appended - which doesn't count to the maximum limit.")
, alternator_describe_table_info_cache_validity_in_seconds(this, "alternator_describe_table_info_cache_validity_in_seconds", liveness::LiveUpdate, value_status::Used, 60 * 60 * 6,
"The validity of DescribeTable information - table size in bytes. This is how long calculated value will be reused before recalculation.")
, abort_on_ebadf(this, "abort_on_ebadf", value_status::Used, true, "Abort the server on incorrect file descriptor access. Throws exception when disabled.")
, sanitizer_report_backtrace(this, "sanitizer_report_backtrace", value_status::Used, false,
"In debug mode, report log-structured allocator sanitizer violations with a backtrace. Slow.")

1
db/config.hh
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@@ -477,6 +477,7 @@ public:
named_value<bool> alternator_allow_system_table_write;
named_value<uint32_t> alternator_max_expression_cache_entries_per_shard;
named_value<uint64_t> alternator_max_users_query_size_in_trace_output;
named_value<uint32_t> alternator_describe_table_info_cache_validity_in_seconds;
named_value<bool> abort_on_ebadf;