Difference between revisions of "Product Opener/MongoDB indexes"
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Revision as of 14:56, 27 October 2016
Note: the current indexes are probably not the best indexes, they are used on the current Open Food Facts production server and are thus "good enough", but they certainly can - and should - be improved.
In addition, some indexes are probably not used anymore and should be removed.
Help to create better indexes is much welcome! :-)
Indexes in production
01/23/2016 : MongoDB 2.4.12 on Debian Squeeze 6.0.10
> db.products.getIndexes()
[
{
"v" : 1,
"key" : {
"_id" : 1
},
"ns" : "off-fr.products",
"name" : "_id_"
},
{
"v" : 1,
"key" : {
"lc" : 1
},
"ns" : "off-fr.products",
"name" : "lc_1"
},
{
"v" : 1,
"key" : {
"lc" : 1,
"last_modified_t" : -1
},
"ns" : "off-fr.products",
"name" : "lc_1_last_modified_t_-1"
},
{
"v" : 1,
"key" : {
"lc" : 1,
"last_modified_t" : 1
},
"ns" : "off-fr.products",
"name" : "lc_1_last_modified_t_1"
},
{
"v" : 1,
"key" : {
"code" : 1
},
"ns" : "off-fr.products",
"name" : "code_1"
},
{
"v" : 1,
"key" : {
"product_name" : 1,
"generic_name" : 1,
"last_modified_t" : 1,
"lc" : 1,
"code" : 1
},
"ns" : "off-fr.products",
"name" : "product_name_1_generic_name_1_last_modified_t_1_lc_1_code_1"
},
{
"v" : 1,
"key" : {
"lc" : 1,
"complete" : -1,
"last_modified_t" : -1,
"product_name" : 1,
"generic_name" : 1
},
"ns" : "off-fr.products",
"name" : "lc_1_complete_-1_last_modified_t_-1_product_name_1_generic_name_1"
},
{
"v" : 1,
"key" : {
"complete" : -1,
"last_modified_t" : -1,
"product_name" : 1,
"generic_name" : 1
},
"ns" : "off-fr.products",
"name" : "complete_-1_last_modified_t_-1_product_name_1_generic_name_1"
},
{
"v" : 1,
"key" : {
"_keywords" : 1,
"complete" : -1,
"last_modified_t" : -1,
"product_name" : 1,
"generic_name" : 1
},
"ns" : "off-fr.products",
"name" : "_keywords_1_complete_-1_last_modified_t_-1_product_name_1_generic_name_1"
},
{
"v" : 1,
"key" : {
"sortkey" : -1
},
"ns" : "off-fr.products",
"name" : "sortkey_-1"
},
{
"v" : 1,
"key" : {
"last_modified_t" : -1
},
"ns" : "off-fr.products",
"name" : "last_modified_t_-1"
},
{
"v" : 1,
"key" : {
"created_t" : -1
},
"ns" : "off-fr.products",
"name" : "created_t_-1"
},
{
"v" : 1,
"key" : {
"sortkey" : -1,
"countries_tags" : 1
},
"ns" : "off-fr.products",
"name" : "sortkey_-1_countries_tags_1"
},
{
"v" : 1,
"key" : {
"last_modified_t" : -1,
"countries_tags" : 1
},
"ns" : "off-fr.products",
"name" : "last_modified_t_-1_countries_tags_1"
},
{
"v" : 1,
"key" : {
"last_modified_t" : -1,
"_keywords" : 1
},
"ns" : "off-fr.products",
"name" : "last_modified_t_-1__keywords_1"
},
{
"v" : 1,
"key" : {
"sortkey" : -1,
"_keywords" : 1
},
"ns" : "off-fr.products",
"name" : "sortkey_-1__keywords_1"
},
{
"v" : 1,
"key" : {
"countries_tags" : 1,
"sortkey" : -1
},
"ns" : "off-fr.products",
"name" : "countries_tags_1_sortkey_-1"
},
{
"v" : 1,
"key" : {
"categories_tags" : 1,
"sortkey" : -1
},
"ns" : "off-fr.products",
"name" : "categories_tags_1_sortkey_-1"
},
{
"v" : 1,
"key" : {
"purchase_places_tags" : 1,
"sortkey" : -1
},
"ns" : "off-fr.products",
"name" : "purchase_places_tags_1_sortkey_-1"
},
{
"v" : 1,
"key" : {
"brands_tags" : 1,
"sortkey" : -1
},
"ns" : "off-fr.products",
"name" : "brands_tags_1_sortkey_-1"
},
{
"v" : 1,
"key" : {
"status_tags" : 1,
"sortkey" : -1
},
"ns" : "off-fr.products",
"name" : "status_tags_1_sortkey_-1"
},
{
"v" : 1,
"key" : {
"country_tags" : 1,
"last_modified_t" : -1
},
"ns" : "off-fr.products",
"name" : "country_tags_1_last_modified_t_-1"
},
{
"v" : 1,
"key" : {
"country_tags" : 1,
"created_t" : -1
},
"ns" : "off-fr.products",
"name" : "country_tags_1_created_t_-1"
},
{
"v" : 1,
"key" : {
"country_tags" : 1,
"product_name" : 1
},
"ns" : "off-fr.products",
"name" : "country_tags_1_product_name_1"
},
{
"v" : 1,
"key" : {
"_keywords" : 1,
"product_name" : 1
},
"ns" : "off-fr.products",
"name" : "_keywords_1_product_name_1"
},
{
"v" : 1,
"key" : {
"_keywords" : 1,
"created_t" : -1
},
"ns" : "off-fr.products",
"name" : "_keywords_1_created_t_-1"
},
{
"v" : 1,
"key" : {
"_keywords" : 1,
"last_modified_t" : -1
},
"ns" : "off-fr.products",
"name" : "_keywords_1_last_modified_t_-1"
},
{
"v" : 1,
"key" : {
"_keywords" : 1,
"sortkey" : -1
},
"ns" : "off-fr.products",
"name" : "_keywords_1_sortkey_-1"
},
{
"v" : 1,
"key" : {
"countries_tags" : 1,
"product_name" : 1
},
"ns" : "off-fr.products",
"name" : "countries_tags_1_product_name_1"
},
{
"v" : 1,
"key" : {
"categories_tags" : 1
},
"ns" : "off-fr.products",
"name" : "categories_tags_1"
},
{
"v" : 1,
"key" : {
"sortkey" : -1,
"categories_tags" : 1
},
"ns" : "off-fr.products",
"name" : "sortkey_-1_categories_tags_1"
},
{
"v" : 1,
"key" : {
"categories_tags" : 1,
"last_modified_t" : -1
},
"ns" : "off-fr.products",
"name" : "categories_tags_1_last_modified_t_-1"
},
{
"v" : 1,
"key" : {
"brands_tags" : 1,
"last_modified_t" : -1
},
"ns" : "off-fr.products",
"name" : "brands_tags_1_last_modified_t_-1"
},
{
"v" : 1,
"key" : {
"status_tags" : 1,
"last_modified_t" : -1
},
"ns" : "off-fr.products",
"name" : "status_tags_1_last_modified_t_-1"
},
{
"v" : 1,
"name" : "unique_scans_n_-1",
"key" : {
"unique_scans_n" : -1
},
"ns" : "off-fr.products"
},
{
"v" : 1,
"name" : "unique_scans_n_-1_product_name_1_generic_name_1",
"key" : {
"unique_scans_n" : -1,
"product_name" : 1,
"generic_name" : 1
},
"ns" : "off-fr.products"
}
]