0.11.2

Overview

This is a bugfix release. Several things related to crud statistics (0.11.0 and 0.11.1 release features) was improved or fixed.

Breaking changes

There are no breaking changes in the release.

New features

• Make metrics quantile collector age params configurable (#286).

• Add separate latency_average and latency_quantile_recent fields to crud.stats() output (#286).

Bugfixes

• Preset stats_quantile_tolerated_error crud.cfg parameter is no more lost on configuration update (#284).

0.11.1

Overview

This release fixes critical bug introduced in 0.11.0. It is
recommended to use 0.11.1 instead of 0.11.0.

It also adds an ability to configure quantile collector tolerated
error and changes its default value.

Breaking changes

There are no breaking changes in the release.

New features

Set quantile collector tolerated error with crud.cfg (#281):

crud.cfg{ stats_quantile_tolerated_error = 1e-4 }

Decreasing tolerated error may fix getting -Inf values in
quantiles. Increasing tolerated error may improve performance a bit.

Bugfixes

Requests no more fail with "Sharding hash mismatch" error
if ddl set and bucket_id is explicitly specified (#278).

0.11.0

Caution: Use CRUD 0.11.1 instead of 0.11.0. It fixes critical bug
for requests with specified bucket id (see #278).

Overview

This release adds several features and optimizations to CRUD module
and fixes some critical problems.

If you use CRUD with DDL, we highly recommend to update to this version.

Breaking changes

There are no breaking changes in the release.

crud.common.sharding_func and crud.common.sharding_key sharding
cache reload modules are deprecated now (since sharding cache reload
is now automatic) and will be removed in future releases.

New features

• crud.count() function to calculate the number of tuples
  in the space according to conditions. Read more about this
  feature in README "Count" section.

• crud.stats() function to monitor performance of your requests.
  To enable statistics collect, use

  crud.cfg{ stats = true }

  If metrics package found, CRUD metrics will be automatically exported
  to metrics registry. Read more about this feature in README "Statistics"
  section.

• Support bucket id calculating using sharding func specified in
  DDL schema or in _ddl_sharding_func space. Read more about this
  feature in README "API" section.

Bugfixes

• Add automatic reload of DDL schema (#212).
• Fix processing storage error for tuple-merger implementation of
  select/pairs (#271).
• Do not change input tuple object in requests.
• Optimize select with known bucket_id (#234).

0.10.0

Overview

The main feature of this release is support of automatic calculation of the
sharding key according to the database schema defined by tarantool/ddl
module. Example:

crud 0.9.0:

local tuple = {7, 'Dimitrion'}
local sharding_key = tuple[2]
local bucket_id = vshard.router.bucket_id_strcrc32(sharding_key)
return crud.insert('customers', tuple, {bucket_id = bucket_id})

crud 0.10.0 (when sharding_key definition is present):

local tuple = {7, 'Dimitrion'}
return crud.insert('customers', tuple)

Added

• CRUD operations calculates bucket id automatically using sharding
  key specified with DDL schema or in _ddl_sharding_key space (#166).

  NOTE: CRUD methods delete(), get() and update() requires that sharding
  key must be a part of primary key. Otherwise specify bucket_id explicitly.

Fixed

• Use tuple-merger backed select implementation on tarantool 2.10+ (it gives
  less pressure on Lua GC) (PR #227).

0.9.0

Overview

The most important changes are the new crud.len() function and optimizations
in crud.select() / crud.pairs().

Added

• crud.len() function to calculate the number of tuples
  in the space for memtx engine and calculate the maximum
  approximate number of tuples in the space for vinyl engine.
• Testing: added integration with service coveralls.io (PR #195).
• Testing: added integration with luacov that allows to generate report with
  code coverage statistics (PR #195).

Changed

• Names of errors generated by CRUD operations have been unified (PR #184).
• Opmimize crud.select() / crud.pairs() for one replicaset case (say, when
  bucket_id is passed or deducible from conditions). It gives 13% boost on
  the case from #220 (PR #226).

Fixed

• Ignoring of an error in crud.pairs() (#144).
• Damaging of opts table by CRUD methods (#192).
• Ignoring of bucket_id option in crud.select()/crud.pairs() (#220).

0.8.0

Bug fixes

• Invalid results for pagination queries when filtering on
  a part of a composite index

Features

• Added jsonpath indexes support for queries
• tuple-merger module updated to 0.0.2

0.7.1

Bug fixes

• Compatibility with Tarantool versions that don't support key_def and merger modules.
• Ignoring opts.first on crud.pairs call
• External keydef compatibility with built-in merger

0.7.0

Bug fixes

• Fixed error for partial result option if field contains box.NULL.
• Fixed incorrect crud results during reverse pagination
  without specifying batch_size.
• Fixed crud roles reload:
  • before this patch reload wasn't fair - reloading tuple.merger
    and tuple.keydef modules failed, and crud started to use
    crud.select.compat.select_old module with naive merger implementation;
  • fair reloading tuple.merger and tuple.keydef led to the error that was
    fixed by caching loaded module in the special global variable not cleaned
    on reloading roles;
  • ability of using tuple.merger and tuple.keydef modules now is checked
    by calling package.search, built-in merger and keydef modules are used
    if present in package.loaded. It allows to avoid ignoring errors on checking
    modules existing via pcall(require, '<module_name>').
• Fixed some cases when module ignored schema updates.

Features

• cut_rows and cut_objects functions to cut off scan key and
  primary key values that were merged to the select/pairs partial result.
• Functions stop() for the roles crud-storage and crud-router.
• Option flag force_map_call for select()/pairs()
  to disable the bucket_id computation from primary key.
• crud.min and crud.max functions to find the minimum and maximum values in the specified index.
• Added support for jsonpath for select.

0.6.0

Bug fixes

• Fixed not finding field in tuple on crud.update if
  there are is_nullable fields in front of it that were added
  when the schema was changed for Tarantool version <= 2.2.

• Pagination over multipart primary key.

Features

• mode, prefer_replica and balance options for read operations
  (get, select, pairs). According to this parameters one of vshard
  calls (callrw, callro, callbro, callre, callbre) is selected

0.5.0

Bug fixes

Fixed not finding field in tuple on crud.update if
there are is_nullable fields in front of it that were added
when the schema was changed.

• Fixed select crash when dropping indexes
• Using outdated schema on router-side
• Sparsed tuples generation that led to "Tuple/Key must be MsgPack array" error

Features

• Support for UUID field types and UUID values
• fields option for simple operations and select/pairs calls with pagination
  support to get partial result