CN104820692B - Method and device for establishing index - Google Patents
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- CN104820692B CN104820692B CN201510208147.4A CN201510208147A CN104820692B CN 104820692 B CN104820692 B CN 104820692B CN 201510208147 A CN201510208147 A CN 201510208147A CN 104820692 B CN104820692 B CN 104820692B
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000012544 monitoring process Methods 0.000 claims abstract description 35
- 230000001680 brushing effect Effects 0.000 claims abstract description 14
- 238000007596 consolidation process Methods 0.000 claims description 17
- 239000012634 fragment Substances 0.000 abstract description 9
- 238000010586 diagram Methods 0.000 description 8
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- 238000004364 calculation method Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
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Abstract
The embodiment of the invention discloses a method and a device for establishing an index, which comprises the steps of monitoring a brushing index stored in a magnetic disk, merging the brushing indexes meeting a preset merging strategy, and generating a merging index; merging the merged index and the current full index according to a preset algorithm to generate a new full index, wherein the new full index is used for data search by a user, the number of the smaller indexes is reduced by merging the existing generated smaller indexes according to a certain rule, and after the size of the index fragments reaches a certain threshold value, a strategy of constructing the full index is adopted, so that the performance consumption of a search engine is reduced, and the efficiency of the whole search task, the index establishment and other tasks is influenced.
Description
Technical field
Technical field more particularly to a kind of method and device for establishing index the present embodiments relate to data processing.
Background technology
A large amount of index fragment can be generated in the storage of memory and disk during the index searched in real time is established,
In this case, present strategy is that index fragment is merged, and this method is after fragment is merged into a certain size to existing
The merging of some index fragments can cause larger merging cost, and the mode that this index merges can not be avoided because of fragment problems
Caused update real-time and inquiry QPS performance loss problems.
Structure index and search service belong to the application of I/O intensive type, the two applications are affixed one's name to for same machine upper portion
The problem of will result in IO competitions seriously affects the performance of index construct and search service.Meanwhile with searching service scale
Explosive growth is presented in increase, business datum.Huge business datum index is built under original server architecture to spend
The time taken is increasingly longer, has seriously affected the user experience of search service.
Invention content
The purpose of the embodiment of the present invention is to propose a kind of method and device for establishing index, it is intended to which how solution, which improves, is searched
Index the efficiency that the index held up merges.
For this purpose, the embodiment of the present invention uses following technical scheme：
A kind of method for establishing index, the method includes：
The brush stored in monitoring disk enters index, and the brush that merging meets preset consolidation strategy enters index, and generation merges rope
Draw；
The index that merges with current full dose index according to preset algorithm is merged, generates new full dose rope
Draw, the new full dose index carries out data search for user.
Preferably, the brush stored in the monitoring disk enters index, and the brush that merging meets preset consolidation strategy enters index,
Generation merges index, including：
Monitoring enters index file when the brush stored in front disk, and acquisition n is of the same size to brush into index, and merging is got
N it is of the same size brush into index, generation merges index.
Preferably, the brush stored in the monitoring disk enters index, and the brush that merging meets preset consolidation strategy enters index,
Generation merges index, including：
The brush that stores enters index in monitoring disk, according to it is described brush the speed that generate into index estimate setting merge influence because
Son；
When it is described brush reach the merging impact factor specified into index number of the same size when, then merge the merging specified
The of the same size of impact factor is brushed into index, and generation merges index.
Preferably, it is described to merge the index that merges according to preset algorithm with current full dose index, it generates
New full dose index, the new full dose index carry out data search for user, including：
The index that merges with current full dose index is merged, new full dose index is generated and new merging is appointed
The connection of the new full dose index and the new merging task is established in business；
It in the new full dose index storage to memory module, will monitor whether to complete the current full dose index corresponding
Search mission；
After monitoring and having completed the corresponding search mission of the current full dose, the current full dose index is deleted.
Preferably, the method is closed by the index that merges with current full dose index according to preset algorithm
And new full dose index is generated, before the new full dose index carries out data search for user, further include：
Judge whether to reach and build the time interval that full dose indexes, if so, performing by the merging index and currently
Full dose index is merged according to preset algorithm, generates new full dose index, and the new full dose index carries out for user
Data search.
A kind of device for establishing index, described device include：
First generation unit enters index for monitoring the brush stored in disk, merges the brush for meeting preset consolidation strategy
Enter index, generation merges index；
Second generation unit, for the index that merges to be closed with current full dose index according to preset algorithm
And new full dose index is generated, the new full dose index carries out data search for user.
Preferably, first generation unit, is used for：
Monitoring enters index file when the brush stored in front disk, and acquisition n is of the same size to brush into index, and merging is got
N it is of the same size brush into index, generation merges index.
Preferably, first generation unit, is used for：
The brush that stores enters index in monitoring disk, according to it is described brush the speed that generate into index estimate setting merge influence because
Son；
When it is described brush reach the merging impact factor specified into index number of the same size when, then merge the merging specified
The of the same size of impact factor is brushed into index, and generation merges index.
Preferably, second generation unit, is used for：
The index that merges with current full dose index is merged, new full dose index is generated and new merging is appointed
The connection of the new full dose index and the new merging task is established in business；
It in the new full dose index storage to memory module, will monitor whether to complete the current full dose index corresponding
Search mission；
After monitoring and having completed the corresponding search mission of the current full dose, the current full dose index is deleted.
Preferably, described device further includes：
Judging unit, for judging whether to reach the time interval of structure full dose index, if so, performing the merging
It indexes to index with current full dose and be merged according to preset algorithm, generate new full dose index, the new full dose index
Data search is carried out for user.
The embodiment of the present invention enters index by monitoring the brush stored in disk, and the brush that merging meets preset consolidation strategy enters
Index, generation merge index；The index that merges is merged with current full dose index according to preset algorithm, generation is new
Full dose index, the new full dose index carries out data search for user, pressed by the smaller index to existing generation
It is merged according to certain rule, so as to reduce the number of smaller index, when the size of index fragment reaches certain threshold value
Afterwards, then entire search mission and rope so as to reduce the performance consumption of search engine, are influenced using the strategy of full dose index construct
Draw the efficiency of the tasks such as foundation.
Description of the drawings
Fig. 1 is the method flow schematic diagram for the method first embodiment that the present invention establishes index；
Fig. 2 is the method flow schematic diagram for the method second embodiment that the present invention establishes index；
Fig. 3 is the high-level schematic functional block diagram for the device that the present invention establishes index；
Fig. 4 is the high-level schematic functional block diagram for the device that the present invention establishes index.
Specific embodiment
The embodiment of the present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this
Locate described specific embodiment to be used only for explaining the embodiment of the present invention rather than the restriction to the embodiment of the present invention.In addition also
It should be noted that part relevant with the embodiment of the present invention rather than entire infrastructure are illustrated only for ease of description, in attached drawing.
Embodiment one
With reference to figure 1, Fig. 1 is the method flow schematic diagram for the method first embodiment that the present invention establishes index.
In embodiment one, the method for establishing index includes：
Step 101, it monitors the brush stored in disk and enters index, the brush that merging meets preset consolidation strategy enters index, raw
It is indexed into merging；
Preferably, the brush stored in the monitoring disk enters index, and the brush that merging meets preset consolidation strategy enters index,
Generation merges index, including：
Monitoring enters index file when the brush stored in front disk, and acquisition n is of the same size to brush into index, and merging is got
N it is of the same size brush into index, generation merges index.
Preferably, the brush stored in the monitoring disk enters index, and the brush that merging meets preset consolidation strategy enters index,
Generation merges index, including：
The brush that stores enters index in monitoring disk, according to it is described brush the speed that generate into index estimate setting merge influence because
Son；
When it is described brush reach the merging impact factor specified into index number of the same size when, then merge the merging specified
The of the same size of impact factor is brushed into index, and generation merges index.
Specifically, the action that memory index writes disk can be triggered while real time indexing is continuously generated, in memory, work as memory
In real time indexing size reach certain threshold value after, then index is written in disk and carries out persistence, also just produced
It brushes into index.When the brush that disk is written, which enters index, to be on the increase, search mission can be caused and index the performance of task
It reduces.By being merged to existing brush into index, the number of index file is reduced, reaches the optimization of performance.
The index file of disk is stored, taking index_flush_0, index_flush_1 herein ... etc., modes are ordered
Name, when brush into index file increase when, these files must just reduce the number of file by way of merging.
For brushing the consolidation strategy into index：Monitoring enters index file when the brush stored in front disk, takes a when there is n
Of the same size just to enter index to current brush and merge when brushing into index, factor of n therein can be selected by test
It selects.
Merge the selection strategy of factor of n：Brush it is very fast into index formation speed, then need will merge factor of n selection it is larger, this
Sample can reduce the merging number brushed in the unit interval into index, conversely, will then merge the smaller number of selecting predictors.This can be with
Enter to index formation speed by practical brush to determine.
Brush index merge during, participate in merge brush enter index throw away externally provide search service, when index close
And after the completion, newly-generated brush enters the external offer service of index beginning.The brush for participating in merging before enters to index corresponding resource and draws
Subtract 1 with technology, ensure to be connected to the thread normal termination for brushing the queried access into index for participating in merging in merging process.
Brush the normal termination merged into index：Participate in merging brushes the new index after index generation merges, and new brush enters
New queried access task is connected on new index after index generation, while is connected to before completion is merged and is participated in what is merged
After brushing the query task normal termination on index, just there is no new queried access task connections to come in.
In merging process, in the event of the machine of delaying or abnormal conditions, merge the non-normal termination of affairs, then to merging thing
It is engaged in carrying out rollback, cleans up the new brush after merging and enter to index, the brush for simultaneously participating in merging enters the normal externally offer of index continuation
Queried access service.
Assuming that the merging influence factor that we select is 2, then it represents that equirotal there are two in index is brushed
When merged to brushing into index.Brush in index that there are index_flush_0 and index_flush_1 now
It is in the same size, then start to combine them into index_flush_2.During index_flush_2 is merged into,
Index_flush_0 and index_flush_1 continues externally to provide normal service.When being completely integrated as index_flush_2
Afterwards, index_flush_2 starts external offer service.The resource on index_flush_0 and index_flush_1 is drawn simultaneously
Subtract 1 with counting,.It is just normal to close after the queried access mission thread on index_flush_0 and index_flush_1
Close index index_flush_0 and index_flush_1.
Step 102, the index that merges with current full dose index according to preset algorithm is merged, generated new
Full dose indexes, and the new full dose index carries out data search for user.
Preferably, it is described to merge the index that merges according to preset algorithm with current full dose index, it generates
New full dose index, the new full dose index carry out data search for user, including：
The index that merges with current full dose index is merged, new full dose index is generated and new merging is appointed
The connection of the new full dose index and the new merging task is established in business；
It in the new full dose index storage to memory module, will monitor whether to complete the current full dose index corresponding
Search mission；
After monitoring and having completed the corresponding search mission of the current full dose, the current full dose index is deleted.
Specifically, establishing the index of index data, and the index storage after foundation is worked as into memory to the index A areas of memory
The size in index A areas reaches threshold value, then by the data copy in memory index A areas to index B areas, memory is indexed to the index in B areas
It brushes in memory space, is cut in the form of subindex and distinguish over full dose index storage.
When merging the quantity increase indexed, index will be merged and merged with full dose index, relevant merging is generated and appoint
Business.Merging task is submitted into the merging that Distributed Calculation cluster merges index and full dose index, it is new complete after merging
In amount index storage to memory module, the search mission now for old full dose index is monitored, new search mission is connected
It is indexed to new full dose, the completion of search mission that old full dose is waited for index, new full dose index takes over seamlessly old complete
Amount index when full dose index switching completion, deletes old full dose index, and the beginning of new full dose index is comprehensively external to provide search times
Business.
The embodiment of the present invention enters index by monitoring the brush stored in disk, and the brush that merging meets preset consolidation strategy enters
Index, generation merge index；The index that merges is merged with current full dose index according to preset algorithm, generation is new
Full dose index, the new full dose index carries out data search for user, pressed by the smaller index to existing generation
It is merged according to certain rule, so as to reduce the number of smaller index, when the size of index fragment reaches certain threshold value
Afterwards, then entire search mission and rope so as to reduce the performance consumption of search engine, are influenced using the strategy of full dose index construct
Draw the efficiency of the tasks such as foundation.
Embodiment two
With reference to figure 2, Fig. 2 is the method flow schematic diagram for the method second embodiment that the present invention establishes index.
In embodiment one, the method further includes：
Step 103, judge whether the time interval for reaching structure full dose index, merge index by described if so, performing
It indexes with current full dose and is merged according to preset algorithm, generate new full dose index, the new full dose index is used for
User carries out data search.
Specifically, with the continuous progress of index merging task, the size brushed into index of generation can increasing, continuation
To it is existing brush to merge into index very big performance can be caused to be lost.In this case, the structure indexed by full dose
To solve the problems, such as the performance loss of index Merging zone method, while improve the efficiency of real time indexing and search again.
Meet real time indexing update and the requirement of search service performance by setting the time cycle of full dose index construct.
It is very fast for real time indexing renewal speed, the period daily few for unit index upgrade amount is generally taken to carry out full dose and indexes structure
The method built.
Embodiment three
With reference to figure 3, Fig. 3 is the high-level schematic functional block diagram for the device that the present invention establishes index.
In embodiment three, the device for establishing index includes：
First generation unit 301 enters index for monitoring the brush stored in disk, and merging meets preset consolidation strategy
It brushes into index, generation merges index；
Preferably, first generation unit 301, is used for：
Monitoring enters index file when the brush stored in front disk, and acquisition n is of the same size to brush into index, and merging is got
N it is of the same size brush into index, generation merges index.
Preferably, first generation unit 301, is used for：
The brush that stores enters index in monitoring disk, according to it is described brush the speed that generate into index estimate setting merge influence because
Son；
When it is described brush reach the merging impact factor specified into index number of the same size when, then merge the merging specified
The of the same size of impact factor is brushed into index, and generation merges index.
Specifically, the action that memory index writes disk can be triggered while real time indexing is continuously generated, in memory, work as memory
In real time indexing size reach certain threshold value after, then index is written in disk and carries out persistence, also just produced
It brushes into index.When the brush that disk is written, which enters index, to be on the increase, search mission can be caused and index the performance of task
It reduces.By being merged to existing brush into index, the number of index file is reduced, reaches the optimization of performance.
The index file of disk is stored, taking index_flush_0, index_flush_1 herein ... etc., modes are ordered
Name, when brush into index file increase when, these files must just reduce the number of file by way of merging.
For brushing the consolidation strategy into index：Monitoring enters index file when the brush stored in front disk, takes a when there is n
Of the same size just to enter index to current brush and merge when brushing into index, factor of n therein can be selected by test
It selects.
Merge the selection strategy of factor of n：Brush it is very fast into index formation speed, then need will merge factor of n selection it is larger, this
Sample can reduce the merging number brushed in the unit interval into index, conversely, will then merge the smaller number of selecting predictors.This can be with
Enter to index formation speed by practical brush to determine.
Brush index merge during, participate in merge brush enter index throw away externally provide search service, when index close
And after the completion, newly-generated brush enters the external offer service of index beginning.The brush for participating in merging before enters to index corresponding resource and draws
Subtract 1 with technology, ensure to be connected to the thread normal termination for brushing the queried access into index for participating in merging in merging process.
Brush the normal termination merged into index：Participate in merging brushes the new index after index generation merges, and new brush enters
New queried access task is connected on new index after index generation, while is connected to before completion is merged and is participated in what is merged
After brushing the query task normal termination on index, just there is no new queried access task connections to come in.
In merging process, in the event of the machine of delaying or abnormal conditions, merge the non-normal termination of affairs, then to merging thing
It is engaged in carrying out rollback, cleans up the new brush after merging and enter to index, the brush for simultaneously participating in merging enters the normal externally offer of index continuation
Queried access service.
Assuming that the merging influence factor that we select is 2, then it represents that equirotal there are two in index is brushed
When merged to brushing into index.Brush in index that there are index_flush_0 and index_flush_1 now
It is in the same size, then start to combine them into index_flush_2.During index_flush_2 is merged into,
Index_flush_0 and index_flush_1 continues externally to provide normal service.When being completely integrated as index_flush_2
Afterwards, index_flush_2 starts external offer service.The resource on index_flush_0 and index_flush_1 is drawn simultaneously
Subtract 1 with counting,.It is just normal to close after the queried access mission thread on index_flush_0 and index_flush_1
Close index index_flush_0 and index_flush_1.
Second generation unit 302, for the index that merges to be carried out with current full dose index according to preset algorithm
Merge, generate new full dose index, the new full dose index carries out data search for user.
Preferably, second generation unit 302, is used for：
The index that merges with current full dose index is merged, new full dose index is generated and new merging is appointed
The connection of the new full dose index and the new merging task is established in business；
It in the new full dose index storage to memory module, will monitor whether to complete the current full dose index corresponding
Search mission；
After monitoring and having completed the corresponding search mission of the current full dose, the current full dose index is deleted.
Specifically, establishing the index of index data, and the index storage after foundation is worked as into memory to the index A areas of memory
The size in index A areas reaches threshold value, then by the data copy in memory index A areas to index B areas, memory is indexed to the index in B areas
It brushes in memory space, is cut in the form of subindex and distinguish over full dose index storage.
When merging the quantity increase indexed, index will be merged and merged with full dose index, relevant merging is generated and appoint
Business.Merging task is submitted into the merging that Distributed Calculation cluster merges index and full dose index, it is new complete after merging
In amount index storage to memory module, the search mission now for old full dose index is monitored, new search mission is connected
It is indexed to new full dose, the completion of search mission that old full dose is waited for index, new full dose index takes over seamlessly old complete
Amount index when full dose index switching completion, deletes old full dose index, and the beginning of new full dose index is comprehensively external to provide search times
Business.
The embodiment of the present invention enters index by monitoring the brush stored in disk, and the brush that merging meets preset consolidation strategy enters
Index, generation merge index；The index that merges is merged with current full dose index according to preset algorithm, generation is new
Full dose index, the new full dose index carries out data search for user, pressed by the smaller index to existing generation
It is merged according to certain rule, so as to reduce the number of smaller index, when the size of index fragment reaches certain threshold value
Afterwards, then entire search mission and rope so as to reduce the performance consumption of search engine, are influenced using the strategy of full dose index construct
Draw the efficiency of the tasks such as foundation.
Example IV
With reference to figure 4, Fig. 4 is the high-level schematic functional block diagram for the device that the present invention establishes index.
On the basis of embodiment three, the device for establishing index further includes：
Judging unit 303, for judging whether to reach the time interval of structure full dose index, if so, performing by described in
Merge index to be merged according to preset algorithm with current full dose index, generate new full dose index, the new full dose
Index carries out data search for user.
Specifically, with the continuous progress of index merging task, the size brushed into index of generation can increasing, continuation
To it is existing brush to merge into index very big performance can be caused to be lost.In this case, the structure indexed by full dose
To solve the problems, such as the performance loss of index Merging zone method, while improve the efficiency of real time indexing and search again.
Meet real time indexing update and the requirement of search service performance by setting the time cycle of full dose index construct.
It is very fast for real time indexing renewal speed, the period daily few for unit index upgrade amount is generally taken to carry out full dose and indexes structure
The method built.
The technical principle of the embodiment of the present invention is described above in association with specific embodiment.These descriptions are intended merely to explain this
The principle of inventive embodiments, and it cannot be construed to the limitation to protection domain of the embodiment of the present invention in any way.Based on herein
Explanation, those skilled in the art, which would not require any inventive effort, can associate the other specific of the embodiment of the present invention
Embodiment, these modes are fallen within the protection domain of the embodiment of the present invention.
Claims (8)
- A kind of 1. method for establishing index, which is characterized in that the method includes：The brush stored in monitoring disk enters index, and the brush that merging meets preset consolidation strategy enters index, and generation merges index；The index that merges with current full dose index according to preset algorithm is merged, generates new full dose index, institute It states new full dose index and carries out data search for user；The brush stored in the monitoring disk enters index, and the brush that merging meets preset consolidation strategy enters index, and generation merges rope Draw, including：The brush that stores enters index in monitoring disk, and setting merging impact factor is estimated according to the speed that generate into index of brushing；When it is described brush reach the merging impact factor specified into index number of the same size when, then merging the merging specified influences The of the same size of the factor is brushed into index, and generation merges index.
- 2. according to the method described in claim 1, it is characterized in that, the brush stored in the monitoring disk enters index, merging is full The brush of the preset consolidation strategy of foot enters index, and generation merges index, including：Monitoring enters index file when the brush stored in front disk, and acquisition n is of the same size to brush into index, merges the n got It is a it is of the same size brush into index, generation merges index.
- 3. according to the method described in claim 1, it is characterized in that, described index root by the index that merges with current full dose It is merged according to preset algorithm, generates new full dose index, the new full dose index carries out data search, packet for user It includes：The index that merges with current full dose index is merged, new full dose index and new merging task is generated, builds The connection of vertical new full dose index and the new merging task；By in the new full dose index storage to memory module, monitor whether that completing the current full dose indexes corresponding search Task；It has completed after the current full dose indexes corresponding search mission, to delete the current full dose index monitoring.
- 4. according to the method described in claims 1 to 3 any one, which is characterized in that the method is merging index by described It indexes with current full dose and is merged according to preset algorithm, generate new full dose index, the new full dose index is used for Before user carries out data search, further include：Judge whether the time interval for reaching structure full dose index, merge index and current full dose by described if so, performing Index is merged according to preset algorithm, generates new full dose index, and the new full dose index carries out data for user Search.
- 5. a kind of device for establishing index, which is characterized in that described device includes：First generation unit enters index for monitoring the brush stored in disk, and the brush that merging meets preset consolidation strategy enters rope Draw, generation merges index；Second generation unit, it is raw for the index that merges to be merged with current full dose index according to preset algorithm The full dose index of Cheng Xin, the new full dose index carry out data search for user；First generation unit, is used for：The brush that stores enters index in monitoring disk, and setting merging impact factor is estimated according to the speed that generate into index of brushing；When it is described brush reach the merging impact factor specified into index number of the same size when, then merging the merging specified influences The of the same size of the factor is brushed into index, and generation merges index.
- 6. device according to claim 5, which is characterized in that first generation unit is used for：Monitoring enters index file when the brush stored in front disk, and acquisition n is of the same size to brush into index, merges the n got It is a it is of the same size brush into index, generation merges index.
- 7. device according to claim 5, which is characterized in that second generation unit is used for：The index that merges with current full dose index is merged, new full dose index and new merging task is generated, builds The connection of vertical new full dose index and the new merging task；By in the new full dose index storage to memory module, monitor whether that completing the current full dose indexes corresponding search Task；It has completed after the current full dose indexes corresponding search mission, to delete the current full dose index monitoring.
- 8. according to the device described in claim 5 to 7 any one, which is characterized in that described device further includes：Judging unit for judging whether to reach the time interval of structure full dose index, merges index if so, performing by described It indexes with current full dose and is merged according to preset algorithm, generate new full dose index, the new full dose index is used for User carries out data search.
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| CN109522313A (en) * | 2018-10-15 | 2019-03-26 | 深圳云天励飞技术有限公司 | Method, apparatus, equipment and the readable storage medium storing program for executing of search server brush index |
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| CN111797091B (en) * | 2019-10-18 | 2024-09-20 | 北京沃东天骏信息技术有限公司 | Method, device, electronic equipment and storage medium for inquiring data in database |
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| CN102087646A (en) * | 2009-12-07 | 2011-06-08 | 北大方正集团有限公司 | Method and device for establishing index |
| WO2012071574A3 (en) * | 2010-11-24 | 2012-08-02 | Visa International Service Association | Unified online content manager apparatuses, methods, and systems |
| CN103294731A (en) * | 2012-03-05 | 2013-09-11 | 阿里巴巴集团控股有限公司 | Real-time index creating and real-time searching method and device |
| CN103020281A (en) * | 2012-12-27 | 2013-04-03 | 中国科学院计算机网络信息中心 | Data storage and search method based on numerical indexing of spatial data |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109522313A (en) * | 2018-10-15 | 2019-03-26 | 深圳云天励飞技术有限公司 | Method, apparatus, equipment and the readable storage medium storing program for executing of search server brush index |
| CN109522313B (en) * | 2018-10-15 | 2020-11-24 | 深圳云天励飞技术有限公司 | Method, device and equipment for refreshing index of search server and readable storage medium |
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