dc885c6e95
Summary: With this change, make now prints a summary line for each compiler and linker invocation, e.g.,: CC db/builder.o CC db/c.o CC db/column_family.o To see full commands, insert "V=1" into your make command. E.g., run "make V=1 all" if you want it to print each command in its full glory. $^ is GNU make's abbreviation for the prerequisites of the current target. These AM_V_... variables expand to some very short string like "CC" or "LD", by default, so that the output of "make" is readable. If/when you want more details, just build with "make V=1 ...", and make will print each full command as it is executed. If you prefer to see the noise all the time, and only want to optionally see the abbreviated output, set AM_DEFAULT_VERBOSITY=1 in your environment, and then build with V=0 to see the abbreviated command indicators. Test Plan: invoke make a few different ways and observe: make clean; make # abbreviated make clean; make V=0 # also abbreviated make clean; make V=1 # full detail Reviewers: sdong, ljin, igor Reviewed By: igor Subscribers: dhruba Differential Revision: https://reviews.facebook.net/D33579
RocksDB: A Persistent Key-Value Store for Flash and RAM Storage
RocksDB is developed and maintained by Facebook Database Engineering Team. It is built on earlier work on LevelDB by Sanjay Ghemawat (sanjay@google.com) and Jeff Dean (jeff@google.com)
This code is a library that forms the core building block for a fast key value server, especially suited for storing data on flash drives. It has a Log-Structured-Merge-Database (LSM) design with flexible tradeoffs between Write-Amplification-Factor (WAF), Read-Amplification-Factor (RAF) and Space-Amplification-Factor (SAF). It has multi-threaded compactions, making it specially suitable for storing multiple terabytes of data in a single database.
Start with example usage here: https://github.com/facebook/rocksdb/tree/master/examples
See the github wiki for more explanation.
The public interface is in include/. Callers should not include or
rely on the details of any other header files in this package. Those
internal APIs may be changed without warning.
Design discussions are conducted in https://www.facebook.com/groups/rocksdb.dev/