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This release introduces a defragmentation feature and cmap engine optimizations.

Features:

• API extension for defragmentation (currently supported only by cmap engine)

Optimizations:

• faster restart time of cmap engine
• faster put method execution for cmap engine

This is a bugfix release for pmemkv 1.0

Major fixes:

• fix finding memkind package
• fix finding gtest in user-defined paths
• add SOVERSION
• skip valgrind and pmemcheck tests if they are not installed

This is the first release of pmemkv project which guarantees backward compatibility.

Optimizations:

• refactored core for libpmemobj-based engines
• adjusted cmap engine to libpmemobj-cpp 1.8 optimizations

Changes in tests and build system:

• added support for generic tests parameterized i.a. by engine type
• added framework for pmreorder tests

Other changes:

• added new, more specific error statuses
• added C++ API for config structure
• added doxygen documentation for C++ API
• moved function to create configuration from JSON string to a new optional library
• generic support for libpmemobj-based engines for handling persistent pointers as a config parameter

This is the first official release of pmemkv project.

It unifies and extends native C and C++ API and introduces config structure - flexible way for configuring engines.

Pmemkv core was redesigned - C++ API is implemented on the top of C API now and exposed as a header-only library.

We have also provided extended pmemkv engines and API documentation in form of man pages.

Optimizations:

• string_view class for optimal keys passing
• heterogeneous lookup in cmap engine

Features:

• added error messages
• extended error handling

Changes in tests and build system:

• added Travis CI
• cmake creation and build system refactoring
• added tests with pmemcheck/memcheck/helgrind/drd
• added clang-format
• added Coverity support
• added coverage support
• added CI jobs for checking compatibility with Ruby, Java, Node.js bindings

Others:

• removed functions to iterate over keys only
• removed engine_context function

We have also modified existing engines and tests to meet changes in both pmemkv core and API. Poorly chosen function names were cleaned up.

The reason this release has version 0.8 is because we are still open for suggestions from customers before we stabilize the APIs and commit to maintaining backward compatibility. It does not mean that the library is unfinished or unstable. However, more engines and extended functionality are planned to be delivered in the future.