- 27 Jun, 2015 1 commit
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antirez authored
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- 26 Jun, 2015 1 commit
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antirez authored
The GIS standard and all the major DBs implementing GIS related functions take coordinates as x,y that is longitude,latitude. It was a bad start for Redis to do things differently, so even if this means that existing users of the Geo module will be required to change their code, Redis now conforms to the standard. Usually Redis is very backward compatible, but this is not an exception to this rule, since this is the first Geo implementation entering the official Redis source code. It is not wise to try to be backward compatible with code forks... :-) Close #2637.
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- 24 Jun, 2015 3 commits
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antirez authored
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antirez authored
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antirez authored
The returned step was in some case not enough towards normal coordinates (for example when our search position was was already near the margin of the central area, and we had to match, using the east or west neighbor, a very far point). Example: geoadd points 67.575457940146066 -62.001317572780565 far geoadd points 66.685439060295664 -58.925040587282297 center georadius points 66.685439060295664 -58.925040587282297 200 km In the above case the code failed to find a match (happens at smaller latitudes too) even if far and center are at less than 200km. Another fix introduced by this commit is a progressively larger area towards the poles, since meridians are a lot less far away, so we need to compensate for this. The current implementation works comparably to the Tcl brute-force stress tester implemented in the fuzzy test in the geo.tcl unit for latitudes between -70 and 70, and is pretty accurate over +/-80 too, with sporadic false negatives. A more mathematically clean implementation is possible by computing the meridian distance at the specified latitude and computing the step according to it.
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- 23 Jun, 2015 6 commits
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antirez authored
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antirez authored
1. We no longer use a fake client but just rewriting. 2. We group all the inserts into a single ZADD dispatch (big speed win). 3. As a side effect of the correct implementation, replication works. 4. The return value of the command is now correct.
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antirez authored
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antirez authored
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antirez authored
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antirez authored
This commit simplifies the implementation in a few ways: 1. zsetScore implementation improved a bit and moved into t_zset.c where is now also used to implement the ZSCORE command. 2. Range extraction from the sorted set remains a separated implementation from the one in t_zset.c, but was hyper-specialized in order to avoid accumulating results into a list and remove the ones outside the radius. 3. A new type is introduced: geoArray, which can accumulate geoPoint structures in a vector with power of two expansion policy. This is useful since we have to call qsort() against it before returning the result to the user. 4. As a result of 1, 2, 3, the two files zset.c and zset.h are now removed, including the function to merge two lists (now handled with functions that can add elements to existing geoArray arrays) and the machinery used in order to pass zset results. 5. geoPoint structure simplified because of the general code structure simplification, so we no longer need to take references to objects. 6. Not counting the JSON removal the refactoring removes 200 lines of code for the same functionalities, with a simpler to read implementation. 7. GEORADIUS is now 2.5 times faster testing with 10k elements and a radius resulting in 124 elements returned. However this is mostly a side effect of the refactoring and simplification. More speed gains can be achieved by trying to optimize the code.
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- 22 Jun, 2015 5 commits
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antirez authored
This feature apparently is not going to be very useful, to send a GEOADD+PUBLISH combo is exactly the same. One that would make a ton of difference is the ability to subscribe to a position and a radius, and get the updates in terms of objects entering/exiting the area.
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antirez authored
Also: 1. The function was renamed. 2. An useless initialization of a buffer was removed.
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antirez authored
The command can only return data in the normal Redis protocol. It is up to the caller to translate to JSON if needed.
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antirez authored
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Matt Stancliff authored
Current todo: - replace functions in zset.{c,h} with a new unified Redis zset access API. Once we get the zset interface fixed, we can squash relevant commits in this branch and have one nice commit to merge into unstable. This commit adds: - Geo commands - Tests; runnable with: ./runtest --single unit/geo - Geo helpers in deps/geohash-int/ - src/geo.{c,h} and src/geojson.{c,h} implementing geo commands - Updated build configurations to get everything working - TEMPORARY: src/zset.{c,h} implementing zset score and zset range reading without writing to client output buffers. - Modified linkage of one t_zset.c function for use in zset.c Conflicts: src/Makefile src/redis.c
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