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Rate limit API requests #371

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Rate limit API requests #371

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17 changes: 14 additions & 3 deletions ansible/roles/ooni-measurements/templates/ngx-oomsm-web
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Original file line number Diff line number Diff line change
Expand Up @@ -36,26 +36,37 @@ server {

proxy_read_timeout {{ oomsm_timeout_s }}s;

limit_req zone=limit_qps burst=10 nodelay;

location / {
proxy_pass http://{{ oomsm_backend_ipv4 }}:{{ oomsm_backend_port }};
}

{{ c.location_letsencrypt() }}

# Limit all requests to 10 per second
limit_req zone=limit_qps burst=10 nodelay;

location = /measurements {
location = /api/v1/measurements {
proxy_pass http://{{ oomsm_backend_ipv4 }}:{{ oomsm_backend_port }};

proxy_cache_min_uses 3; # this should avoid polluting the cache with random measurements search queries
proxy_cache api;
proxy_cache_valid 200 1h;
proxy_cache_lock on;
proxy_cache_lock_timeout 58s;
proxy_cache_lock_age 58s; # I don't quite understand the difference with proxy_cache_lock_timeout
proxy_cache_lock_age 58s;
proxy_cache_use_stale error timeout invalid_header updating;
proxy_cache_background_update on;

# These queries are very heavy and can include offset limits
limit_req zone=limit_qps burst=2 nodelay;
}

location /api/v1/ {
proxy_pass http://{{ oomsm_backend_ipv4 }}:{{ oomsm_backend_port }};

# These are all the public API endpoints, so we rate them limit them too
limit_req zone=limit_qps burst=5 nodelay;
}

{% for handle in ["/", "/stats", "/api/_/global_overview", "/api/_/global_overview_by_month", "/api/_/measurement_count_by_country", "/api/_/runs_by_month", "/api/_/countries_by_month", "/api/_/asn_by_month"] %}
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